January/March 2012 - GM Service Insights
Contents
1. E Business e Relationships Power Steering System Service Customers that bring their vehicles into a service center with a power steering system issue often mention noise leaks and intermittent power assist But in many cases these symptoms are the result of system contamination and incorrect fluid use which are two significant causes of power steering pump failure if left unchecked On most modern steering systems brake fluids or transmission fluids may not be compatible with pump components Using the wrong fluid could cause hose and seal damage leading to fluid leaks and or noise Only use new clean power steer ing fluid as recommended by the Original Equipment Manufacturer OEM Different fluids are specified by manufacturers to meet the operating require ments of their power steering systems Check the specific manufacturer s Service Information for the correct fluid to use Keep in mind that fluid color is not an indicator of fluid condition Regardless of the original color of new fluid power steering fluid may darken in color during use Power Steering System Bleeding Check for any loose connections in the steering system Loose connections may not leak but could allow air into the system After service all air must be bled from the system in order to verify proper system operation and determine the correct fluid level Pump noise is typically the result of air being drawn into the system on the suction2. course S BKO5 02 01ILT now being scheduled at ACDelco training centers The ABS Operation and Diagnosis course covers e An introduction to ABS brakes e ABS operation e Base brake components e ABS common system components e ABS description and operation e Diagnosis and service ABS Operation In the course participants will learn the basic factors that affect braking and wheel slip There are two types of wheel slip negative slip which occurs during braking and positive slip which occurs during acceleration It s the job of the ABS system to maintain the opti mum negative wheel slip for the best braking The traction control system uses components of the ABS system to control positive wheel slip for optimum acceleration The control strategies employed by the ABS system also are covered For example the course reviews how the EBCM uses inputs from the wheel speed sensors to calculate wheel speed the lateral accelerometer sensor as an indication of vehicle lateral acceleration the yaw rate sensor as an indication of vehicle yaw rate and the steering wheel position sensor as an indication of the position and rotation of the steering wheel Using these calculations the EBCM can command the Brake Pressure Modulator Valve BPMV to direct fluid to each wheel Diagnosis and Service Diagnostics covered in the course include using a scan tool to check Diagnostic Trouble Codes DTCs as well as checking the
3. Aftersales continues to address the other half of the parts balancers 4WD actuator motors and engine cooler lines i i to intake manifolds and gaskets cylinder heads and purchase calculation price clutch kits now comprise the component parts family This is a huge opportunity for dealers to get more In the third quarter of 2011 over 300 part numbers were parts needed to round out a big repair job into the hands of added to the overPOWER The Competition pricing program ISCs who may not know the opportunity they have to get designed to make OE powertrain parts equally attractive competitively priced OE Service Parts says Amy Buzan from a price standpoint wholesale dealer channel specialist With more dealers taking part in the overPOWER Targeting aftermarket competitors selling program ISCs have more opportunities than ever to offer l l Genuine GM Parts to customers from top to bottom parts of cheaper quality and price the overPOWER initiative enters 2012 with over 1 600 distinct part numbers spanning a broad range of engine and transmission assemblies and components Using overPOWER participating dealers are able to offer Independent Service Center ISC customers competitive prices on OE Service Parts that can make the difference between a job done cheaply and one done right Reiterating the value of Genuine GM Parts beyond major engine and transmission assemblies GM Customer Care amp Aftersales has been empha
4. Performance emphasizes versatility choice at SEMA 2011 Touting Dale Earnhardt Jr s endorsement of its groundbreaking new powertrain kit Chevrolet Performance used the November Specialty Equipment Manufacturer s Association SEMA show to emphasize a clear commitment to the varying needs of the high performance builder enthusiast community Along with a new Connect and Cruise Crate Powertrain System that simplifies the task of ordering and installing crate engine transmission controller packages Chevrolet Performance talked up new crate engines controller kits fuel pumps and the rebirth of a historic concept car at the event Connect and Cruise which now consists of two engine transmission kits CPSLSA4L85E or CPSLS34L65E the LS3 4L65E and the LSA 4L85E was formally introduced in the form of a restored 1970 Chevelle SS coupe Earnhardt helped GM engineers design Outfitted with the LSA 4L85E package the Earnhardt Chevelle was constructed from a GM licensed reproduction body from Dynacorn International Inc It also sported a broad mix of trim and interior parts from other licensed GM Restoration Parts suppliers But the vehicle s chief role at SEMA was to promote Connect and Cruise an initiative Chevrolet Performance sees as central to a strategy of catering to the subset of restorers and enthusiasts who value pre selected plug and play powertrain solutions While many enthusiasts like the challenge and versatility elle assoc
5. amperage output trom an active Wheel Speed Sensor WSS A variety of service resources also are highlighted that can help technicians in analyzing ABS TCS parameters In addition the yaw rate reference table reset procedure is discussed If 6 TECHCONNECT The ABS system helps control negative and positive wheel slip the data in the yaw rate sensor lateral accelerometer data table which Is used to determine how the VSES operates becomes unreliable false VSES activations or poor VSES perfor mance can occur Learn More ACDelco offers on demand Web based Training courses WBT instructor led Virtual Classroom Training VCT courses and a variety of hands on Instructorled Training ILT courses in addition to ABS Operation and Diagnosis at training centers around the country To review the latest training courses available log in to the ACDelco Learning Management System LMS at www acdelcotraining com Thanks to Greg St Aubin Tero mi TECH o EENE The following technical tips provide repair information about specific conditions on a variety of vehicles If you have a tough or unusual service repair call 1 800 825 5886 prompt 2 to speak with a technical expert with the latest OEM information Extended Diagnostic Hotline Hours The Technical Hotline is available to help technicians with a variety of technical repairs Now ACDelco is here to help even more with expanded hours of operatio
6. available but the Tire Pressure Monitor TPM sensor is not programmed This accommo dates fleet usage in which spare tires may be frequently switched trom vehicle to vehicle Fourwheel anti lock heavy duty disc brakes are used and are police calibrated Brake rotors are 13 58 Inches in diameter Vehicles are shipped with protection covers on the brake discs of the rear wheels only With the vehicle on a hoist rotate the wheel while at the same time pulling the torn end of the cover away from the brake disc and wheel Ensure that all material is removed and repeat for the other wheel PDI at the dealer Electrical System For diagnostic purposes communication with both models is done using the Tech 2 and CANdi module GDS 2 does not communicate with the Caprice The electrical system is powered by a 170 amp high output generator with idle boost transmission in Neutral or Park A 110 amp ignition and main power supply wiring harness is located under the lower right side of the instrument panel One 50 amp battery power circuit and two 30 amp relay controlled circuits are in a five foot coil provided for customer connection Included in the harness are signal circuits for ignition power HOT in START RUN and ACCESSORY RUN vehicle radio mute vehicle speed signal and park enable There is also a 120 amp power supply in the trunk with a ground stud The primary battery is located in a compartment on the driver s side of the t
7. far enough to ensure optimal engine performance For a current list of gasoline brands that meet the TOP TIER standards visit www toptiergas com Thanks to John Kopec and Alan Salisbury 4 TECHCONNECT The New Caprice Police Patrol Vehicle Chevrolet recently began deliveries of the new 2011 Caprice Police Patrol Vehicle PPV to fleets and municipalities Available as an unmarked Detective model RPO 9C3 and as a Police model RPO 9C1 these Caprice models are essentially alike differing only in details specific to the needs of detectives or patrol officers The Caprice PPV was devel oped specifically for law enforcement with input from police officers Powertrain Initially all Caprice PPVs will be delivered with a 6 0L V8 engine RPO L77 The V8 engine produces 355 HP and 384 lb ft of torque It features E85 FlexFuel capability and Active Fuel Management The air conditioning is cut off at wide open throttle Engine oil transmission and power steering coolers are all standard as are electric cooling fans and ethylene propylene diene monomer EPDM coolant hoses The oil to coolant engine oil cooler system is mounted on the left side of the lower engine block forward of the oil filter A sixspeed 6L80E automatic transmission is used It provides protection against overrevving when low gear is manually selected A Sport shift mode providing delayed upshifts and earlier downshifts when maximum engine
8. for traditional engine building processes and the usual work that restorers and rebuilders do This is just tak ing the mystery out of it for those who want a simpler process Chevrolet Performance carried on the theme of blending simplification and high performance with other announcements at SEMA 2011 e A calibrated controller kit allowing easier adaptation of 2007 2009 versions of the 5 3L V8 to a range of hot rod projects e Another groundbreaking LS high performance engine the LS376 525 which marries the racing derived ASA camshaft with the LS3 6 2L production engine It now stands as the most powerful production based crate engine in the Chevrolet Performance portfolio e An LSA controller kit that improves instal lation and operation of the 556 horsepower supercharged kih LSA crate engine in older vehicles e The high volume fuel pump module used in the 2012 Chevrolet Camaro ZL1 will be sold through Chevrolet Performance giving Camaro builders access to the very latest Camaro fuel delivery technology B Jan Mar 2012 Servicelnsights Leadership in Trucks Continues GMC Sierra and Chevrolet Silverado define truck appeal durability and performance With both brands offering a broad and diverse line up of trucks ranging from job ready Work Truck models to the luxury rides the GMC Sierras and Chevrolet Silverados personify the American trucking experience Chevrolet Silverado With a broad ra
9. power and transmission responsiveness are required can be accessed by pressing the Sport Mode button in front of the shift lever RPO 9C1 Police model or moving the shift lever over from D Drive to the right quadrant RPO 9C3 Detective model The 2011 rear drive Caprice PPV V8 is equipped with a 2 92 rear axle ratio with a standard limited slip differential Traction Control is deactivated when the Police Performance mode is engaged Body Chassis and Suspension The unitized body structure features extensive use of high strength and ultra high strength steel and engineered energy load paths to enhance crash protection A Flexible Front End Module FEM design creates simpler and taster damage repair Compared with traditional front end designs that have welded upper cross members beams and radiator supports the Caprice PPV features a bolt on and off design that saves repair costs due to a reduction in cutting welding and painting With the FEM removed a walk in front end allows easi er repair and servic ing of major body and engine components A standard four wheel independent suspension with front and rear stabilizer bars features heavy duty components Flexible Front End FEM Module Wheels are heavy duty steel and mounted with speed rated P235 50R18 blackwall tires A compact spare is included Recommended tire pressure is 39 psi 269 kPa front and 44 psi 303 kPa rear A full size spare tire is
10. rail from the fuel tank If fuel contamination is suspected for these models the inside of the fuel rail and fuel tank should be inspected for fuel contamination If this condition occurs intermittently it is unlikely that fuel contamination would be found by simply taking a fuel sample from the fuel feed line fuel pressure test port Typically it will be necessary to turn the engine off as the misfire is occurring carefully remove the fuel rail while keeping the fuel in the rail and drain it into a clear container for inspection Inline Truck Engines Another example of fuel contamination may be found on some GM trucks and SUVs equipped with an inline 2 8L 2 9L 3 5L 3 7L or 4 2L engine engine RPOs LK5 LLV L52 LLR LL8 These models include the 2005 2007 Rainier 2005 2009 TrailBlazer Envoy 2006 2010 H3 and 2006 2012 Colorado and Canyon If the engine mistires possibly when coming to a stop or during acceleration it may be caused by contaminated fuel Fuel contamination may cause a misfire on cylinder 1 during or shortly after deceleration or on the opposite end cylinder during or following hard acceleration Due to the returnless fuel rail system fuel contaminates may become trapped in the fuel rail and eventually pass through the 1 fuel injector during deceleration and through the opposite end fuel injector on acceleration The injector at the end will depend on the RPO of the engine The inside of the fuel rail a
11. side of the pump causing cavitation or air bubbles in the system A new power steering bleed kit is available on a limited basis from ACDelco that can bleed the system more effectively Contact your local ACDelco representative for more information The kit includes bleeding adapter J 43485 which is used with tool J 42485 MityVac hand vacuum pump to remove air from the steering system B J 43485 bleeding adapter During the bleeding procedure be sure to maintain the fluid level to the full cold level Use the adapter and MityVac to apply a vacuum of 20 in Hg maximum for five minutes Typically vacuum should not drop more than 2 3 in Hg Verify the fluid level fill if necessary and then apply vacuum again Next check the fluid level once again then start the engine and turn the wheel to allow the system to reach a nor mal operating temperature Repeat the procedure until the fluid level stabilizes To view a video of the bleed procedure go to acdelcotechconnect com Click the Product Information tab gt Technical Product Service Aids Flushing the System If replacing a power steering pump flushing the system with new fluid will help eliminate any residual contaminants from causing future pump failure Contaminated fluid may cause low or no pressure from the power steering pump as a result of the relief valve that stops function ing Use the proper special tools if applicable and Service Information instructio
12. ACDelco Learning Management System LMS at www acdelcotraining com by selecting Menu gt Schedule gt Search Course Sessions If the course number 8 TECHCONNECT S EM01 03 01VCT R Training Schedule To search for currently scheduled courses click the Schedule link Select search terms from the dropdown menus and click the Submit button Course Name Serial Data Communication Networks Serial Data Communication Networks Recorded Communication Network Diagnosis Communication Network Diagnosis Recorded GM Hybrid System Safety and Components GM Hybrid System Diagnosis and Repair Camshaft Position Actuator Systems Camshaft Position Actuator Systems Recorded Active Fuel Management Operation Active Fuel Management Operation Recorded Active Fuel Management Diagnosis Active Fuel Management Diagnosis Recorded 6 6L Duramax Engine Diagnosis 6 6L Duramax LMM Diesel Engine 6 6L Duramax LGH and LML Diesel Engines How to Use VCT is known select Menu gt Enrollment gt Enroll Yourself in a Course Session A schedule of your VCT course enroll ments Is available by clicking the You are enrolled in VCT Classes link on the ACDelco Training home page For more information about all of ACDelco s training opportunities con tact your local ACDelco representative Thanks to Greg St Aubin Genuine il Parts Repair Industry News amp Updates Leading with Connect and Cruise Chevrolet
13. Center lets LS7 LS9 D uve rs h eC l p Consumer trend watchers say they detect a growing interest in buying experiences not just products Now buyers of special parts a sse m b l e t h e i r number versions of an LS7 19259944 or LS9 19259945 engine purchased through a Chevrolet Performance dealer can spend a day building the exact engine they ll put in their vehicle with an engine m a ste rp i ece a builder at the GM Performance Build Center in Wixom Mich In the daylong start to finish build process the the final touch is a personalized nameplate affixed to the builder guides the buyer through the hands on process of engine along with the builder s signature assembling the engine s key components From installing The program lets the buyer glimpse a true rarity in the the crankshaft in the cylinder block to installing the intake production engine industry a hand assembly process system to installing a supercharger LS9 only the buyer not something that might excite even the most experienced only sees how it s done but actually does it engine builders For hands on hot rodders this program truly enables them to say they did it all when it came to building their project says Jim Campbell GM U S vice president of Performance Vehicles and Motorsports There s nothing else like itin the industry At day s end the buyer has a oe a blend of a unique e F k experience in depth a3 SO gu knowledg
14. Systems sees eee 4 advantage of the computing power of their PC or notebook computer as well as the speed of the MDI providing faster operation than a Tech 2 with a CANdi module Updated ABS Operation and Diagnosis Training Course 6 The New Caprice Police Patrol Vehicle 5 In addition loaded on a notebook computer Tech2Win can be used during a vehicle road test offering a larger screen with all of the Tech 2 tool functionality Tech Tips 205 7 It also supports touch screen functionality If the computer with the Tech2Win nae Training Update Cae application has a touch screen all Tech2Win functions can be accessed via the raining Apa A touch screen Conduct a Group VCT Session t Service Center J 8 Tech2Win Features a The Tech2Win application offers all of the features and functions of the Tech 2 Tech2Win ON THE WEB e s used for diagnostics only Service programming is still performed through www acdelcotechconnect com click the TIS2Web Service Programming System SPS the TechConnect Magazine link or e Includes the same vehicle coverage as the Tech 2 GDS 2 must be used Log in to the ACDelco LMS click the when servicing GM Global A vehicles which currently includes the Chevrolet Resources link Camaro Equinox Cruze Volt Sonic Buick LaCrosse Regal Verano GMC 360 Product Offerings Distribution Network e Customer Programs Marketing Training
15. This is done in a spotless facility where the builder has his own set of stations to work on the engine block a Jan Mar 2012 Servicelnsights ACDelco eee aciConnec Tech2Win Application Puts the Tech 2 on Your Computer e Requires a license that must be updated every 30 days e Requires PC and notebook computer specifications that meet or exceed the current minimum GM Techline hardware speciti cations Review the latest See NGA z specifications and guidelines at TE F iwm www gmdesolutions com Installation The Tech2Win application can be installed on multiple PCs in the shop There is no limit to the number of installations but each PC requires the monthly license update through TIS2Web continued on page 3 Tech2Win a PC based application version of the IN THIS ISSUE Tech 2 and CANdi Control Area Network diagnostic interface module will be available soon Tech2Win Application Puts the for the aftermarket Tech2Win can be loaded onto a service department PC or note Tech 2 on Your Computer 1 book computer via TIS2Web While not a replacement for the Tech 2 it s a new l resource that provides additional convenience and diagnostic capability Power Steering System Service 2 When using the Tech2Win application vehicle communication is performed Fuel Contamination in Returnless using the Multiple Diagnostic Interface MDI tool It enables technicians to take Fuel
16. anical side of restorations The mod side of his growing resto mod business typically entails selecting and more often than not shoehorning modern powertrain systems into classic frames That s a job often made easier with OE engine and trans mission systems On GM projects Lilly usually first looks to engines and transmission packages from Chevrolet Perfor mance confident they ll install well and deliver on performance Lilly especially likes the selection that Chevrolet Performance offers For customers willing to pay for ultra performance there s the LS and LSX line For those looking to allocate more of the budget to other priorities there are plenty of big and small blocks available Though he tinkered only slightly with the body design on the Flying Purple People Seater Lilly often lets his perfectionist side show through by tinkering with the body Lilly s signature on classics often extends beyond producing a paint finish far outside original factory specs We approach some of these projects with the idea of what would have done asa GM engineer in 1969 he says So sometimes we ll reduce the size of the quarter panels change the look of the back end the roofline and the wheel wells But we re careful not to customize to the point of it being a hey what happened here situation The voice of a perfectionist no doubt But one who clearly uses the pursuit of perfection t
17. cuit Function and Diagnosis Electrical Circuit Function and Diagnosis Recorded Testing Electrical Signal and Control Circuits Testing Electrical Signal and Control Circuits Course Number S EL06 03 01VCT S EL06 03 01VCT R HVAC System Components and Lubricants S EL06 04 01VCT S EL06 04 01VCT R S EL06 06 01VCT S EL06 0701VCT S EM01 01 01VCT S EM01 01 01VCT R S EM01 02 01VCT S EM01 02 01VCT R HVAC System Engine Cooling Controls and Communication Recorded S EM01 03 01VCT S EP08 01 01 VCT S EP08 02 01VCT S EP08 03 01VCT S FNOQ0 01 01VCT Conduct a Group VCT Session at your Service Center If you re looking to schedule a Virtual Classroom Training VCT course and would like to have your entire shop or just a few technicians view the course as part of an on site training session ACDelco can help A VCT course is live real time train ing delivered over the Internet with interaction between the course instruc tor and all participants just as In a real classroom Your ACDelco representative can help in setting up and managing the session TS PU 0006 11 in your service center When a VCT course is scheduled they are available to attend the course at your shop assist in getting your computer system and headset with microphone set up for the VCT and help answer any questions you may have during the training There are two ways to enroll in a VCT course Search for courses in the
18. dillac CTS Cadillac SRX Cadillac STS GMC Acadia Buick LaCrosse 2008 2009 Pontiac G8 2008 2010 Saturn VUE 2008 2011 Buick Enclave Chevrolet Malibu Chevrolet Equinox 2009 2011 Chevrolet Traverse 2010 2011 Chevrolet Camaro equipped with the 3 6L RPO LY7 LLT 2 8L RPO LAU or 3 0L RPO LF1 LFW V6 engine When replacing cylinder heads on a High Feature V6 engine do not use shims spacers with the 2011 new style saddle cap cylinder head Use of shims spacers on this head can cause damage to the cylinder head and actua tors Also the camshaft actuators specifically for the new design head for your application must be used Previous design cylinder head The new saddle cap design cylinder heads will not work with the 2004 2006 engines and first design 2007 engines All timing components and calibrations are different Navigation System Vehicle Location after a Power Loss 2012 and prior GM passenger cars and trucks The navigation radio may not display the vehicle location icon on the map 7 TECHCONNECT accurately after the radio or battery has been replaced or after battery power has been removed from the radio The vehicle location icon accuracy also may be degraded if the GPS signal is not available and the GPS displayed icon has a red line through it The navigation radio does not keep learned GPS information or gyroscope and vehicle speed signals stored when the battery power is removed from the rad
19. e ofhowan gt J engine is built and a 4 i a fully warranted oy high performance Si engine owned in LS9 Exploded View more ways than one fe 4 Jan Mar 2012 Servicelnsights g ACDelco TECHCONnNnect GM OE Service Parts Update cont d The new program is patterned after and closely similar to GM s Corvette Engine Build Experience that has brought nearly 20 buyers of Corvette Z06 and ZR1 engines to Michigan for a similar experience The parts and procedures used in the Corvette program and the LS7 and LSI program are identical While the process of engine building may not be new or novel to many hot rod builders or restorers the Chevrolet Performance Engine Build Experience truly offers aficionados a chance to put a notch of a different kind in their belts Many classics restorers and engine builders can rightly flash some of their own credentials as master builders but the experience of not only seeing their engine built but also participating is hard to duplicate gt Large photo below On Dec 5 2011 Don Henley left engine builder at the GM Performance Build Center assisted Jeff Kasper the first ever customer of the Chevrolet Performance Engine Build Experience The builder and the customer go step by step through the process says Cliff Cohen Chevrolet Performance marketing manager This is not an assembly line where the engine moves from one worker to the next
20. er Steering System Service continued from page 2 Click the Product Information tab gt e Power Steering Pump Warranty Technical Product Service Aids to view Analysis Te HOW ICES e Power Steering Pump Service e Advanced Steering System Considerations pls Sig gt TOANEN e Power Steering System Quality e Power Steering System Overview Improvements e Power Steering System Flush e Advanced Steering System Procedure Diagnosis Summary e Power Steering System Pulley Removal and Installation Thanks to Rick Balabon 3 TECHCONNECT Fuel Contamination in Returnless Fuel Systems Common additives in gasoline today include detergents corrosion inhibitors demulsifiers deposit controls antioxidants and metal deactivators The focus of these additives is on emissions reduction through better engine performance These additives are regulated to ensure that the finished fuel will not contribute to fuel system failure However additive breakdown in gaso line can result in fuel system contamination poor engine performance and eventual failure of the fuel pump and other components In fact since the Environmental Protection Agency EPA first established the minimum additive performance stan dards in 1995 most gasoline marketers have actually reduced the concentration level of detergent additive in their gasoline by up to 50 As with fuel additives modern returnless fuel systems also were developed to lower emiss
21. g GM North America and dialogue box will direct you to Tech2Win Configurator icon on the Saturn ASTRA select the vehicle communication desktop E ETE T A y e e an _ interface When STS a 4 To initiate the software license and USING Suena Prae ie aran install the diagnostic software Tech2Win Bo Lp iis select the Software Download click the i E Bannan SWDL on TIS2Web and click selections 32 Megabyte gni Start Software Download on screen Sram 5 Select Tech2 and Custom for the s T the Nikiana Yer les EELDAS PE update mode sort buttons ia on the Link 6 Select the desired diagnostic screen Ran nae ee i ec In activity is snown The diagnostic software for the desired software package Available pack where beteen the BH MDI vehicle coverage must be downloaded ages include the latest GM North applicable Tech2Win and the PC American coverage as well as Saturn ASTRA Tech2Win To install the application activity between the vehicle MDI Tech2Win and the PC is shown on the bottom of the screen 7 Click Download to begin down loading the diagnostic package just like for a Tech 2 Current progress 2 Select the Tech 2 software and Tech2Win will display during Refer to the Quick Reference Guide download on TIS2Web A prompt the download for complete installation information will ask if you want to install and operating details To access the After the download is complete the Tech2Win i oS
22. iated with selecting and matching powertrain components on their own others want to avoid that You can save time and money by purchasing a single kit while also eliminating the guesswork of matching a transmission to a powerful engine our engineers did all the work says Jim Campbell GM s U S vice president i m Of ei a W l ki gt The Connect and Cruise Crate Powertrain System consists of a supercharged LSA engine and 4L85E automatic transmission combination that is factory engineered and matched with all the electronic control modules wiring harnesses and other key components gt Team Chevy NASCAR driver Dale Earnhardt Jr appeared at the 2011 SEMA show with a 1970 Chevelle SS coupe he helped design with an industry first Chevrolet Connect and Cruise Crate Powertrain System hiiiitiititir TST i ee Jan Mar 2012 Servicelnsights Repair Industry News amp Updates cont d of Performance Vehicles and Motorsports By purchasing everything needed in a kit through Chevrolet Performance dealers customers get all they need for a quick reliable installation with a single part number Based on the feedback we were getting from the enthusiast community we put these complete packages together to help take the mystery out of the entire process which may be important to some people says Cliff Cohen marketing manager for Chevrolet Performance There s still a market
23. io The navigation radio continually uses GPS gyroscope and vehicle speed data to maintain the vehicle location icon positioned accurately on the dis played map There may be periods of time during a drive cycle when the GPS signal may not be available and the vehicle location icon still appears to be accurate This is due to the radio having internal gyroscopes and receiving a vehicle speed signal to maintain accura cy if the radio had received a good GPS signal earlier in the drive cycle Normal driving will improve the accuracy of the vehicle location icon on the displayed map It may be necessary for the vehicle to be driven up to 25 miles 40km with 15 left and 15 right turns while the vehicle location icon is matched to roads on the displayed map Product Information For free technical assistance and product information regarding specif ic ACDelco products contact these toll free information hotlines staffed by ASE certified technicians Brakes 1 888 701 6169 prompt 1 Chassis 1 888 701 6169 prompt 2 Clutches 1 888 725 8625 Lift Supports 1 800 790 5438 Shocks 1 877 466 7752 Starters and Alternators 1 800 228 9672 Steering Pumps Rack and Pinion Gears 1 866 833 5567 Wiper Blades 1 800 810 7096 Training How to Take ACDelco Training Go to www acdelcotechconnect com and click the Training tab to log in to the ACDelco Learning Management System LMS e To enrol
24. ions By not returning hot fuel from the engine to the fuel tank the internal temperature of the fuel tank is reduced lowering evaporative emissions But since the returnless fuel system does not have a fuel return line that returns fuel back to the fuel tank it is easier for fuel contaminants to become trapped in the fuel rail and cause engine mistires and other performance conditions 4 Cylinder Engines An example of fuel contamination may be found on some late model GM vehicles equipped with a 4 cylinder engine including 2003 2010 Vibe ION 2004 2005 Cavalier Sunfire 2004 2010 VUE 2004 2011 Aveo 2004 2012 Malibu 2005 2010 Cobalt 2006 2010 G6 2006 2011 HHR 2007 2010 G3 Gb AURA AURA Hybrid VUE Hybrid 2008 2009 Astra 2010 2012 LaCrosse Equinox Terrain 2011 2012 Regal Cruze and 2012 Sonic models engine RPOs 2HO L61 L91 LAF LAP LAT LAX LAY LE5 LE8 LEQ LHU LNF LNK LSJ LUJ LUU LUV LUW LV6 LXT LXV An intermittent engine misfire may occur on cylinder 1 dur ing or following a left turn or on cylinder 4 during or following a right turn The misfire may typically last up to 10 seconds Any fuel contaminants that make it to the fuel rail tend to gather over the 1 fuel injector inlet when turning left and over the 4 fuel injector inlet when turning right Some random mistires at idle also may occur on the cylinder next to the fuel feed line 1 or 4 depending on the model as contaminants enter the fuel
25. iption to the site Free collision repair procedures are also available by going to www genuinegmparts com Transfer Case Two Four Wheel Drive Actuator Replacement 2012 GMC Truck Sierra 4WD Sierra Silverado VIN C K Service Manual Transmission Transfer Case MP 3023 3024 NQH Repair Instructions On Vehicle Preliminary Procedures Raise and support the vehicle Refer to Lifting and Jacking the Vehicle 1 Two Four Wheel Drive Actuator Bolts Qty 4 Caution Refer to Fastener Caution Tighten 18 N m 13 b ft 2 Two Four Wheel Drive Actuator 3 Two Four Wheel Drive Actuator Seal Procedure 1 Use 45278 and 23907 to remove the seal from the actuator 2 Use the 44907 to install the seal to the actuator Tip Remove the seal from the actuator ONLY if seal replacement is necessary Special Tools 23907 Slide Hammer J 44907 Bearing Installer 45278 Seal Remover This example of Transfer Case Two Four Wheel Drive Actuator Replacement for the GMC Sierra and Chevrolet Silverado is just one of many found in their Service Repair Manuals By following the proper repair procedures technicians can ensure that each vehicle maintains its solid performance and uncompromised safety features for the life of the vehicle Jan Mar 2012 Servicelnsights E Business of Repairs San Antonio resto shop owner respects tradition as he chases perfection In the quest for flawless restorations rehabs and m
26. l in an Instructor Led Training ILT course click the Enrollment link or the Instructor Led Courses link to view the catalog and select a specific course e To enroll in a Virtual Classroom Training VCT course click a i e To launch a TechAssist TAS course click the TechAssists link to view the catalog and select a specific course e To launch a Simulation SIM click the Simulations link to view the catalog and select a diagnostic challenge simulation the Enrollment link or the Virtual Classroom Training Courses link to view the catalog and select a specific course e To launch a Web Based Training WBT course click the Web Based Courses link to view the catalog and select a Specific course Current Virtual Classroom Training The following VCT courses are currently being scheduled Course Number Course Name FVCT1 09V How to Use VCT Recorded S AC07 01 01VCT S AC07 01 01VCT R Recorded S AC07 02 01VCT S AC07 02 01VCT R Recorded S AC07 03 01VCT S AC07 03 01VCT R Recorded S AC07 04 01VCT Communication S AC07 04 01VCT R 9 EL06 01 01VCT S EL06 01 01VCT R S EL06 02 01VCT S EL06 02 01VCT R Recorded HVAC System Components and Lubricants HVAC System Operation and Service Hints HVAC System Operation and Service Hints HVAC System Flushing Recovery and Diagnostics HVAC System Flushing Recovery and Diagnostics HVAC System Engine Cooling Controls and Electrical Cir
27. lick the TechConnect Magazine link or Log in to the ACDelco LMS click the Resources link ACDelco service tips are intended for use by professional technicians not a do it yourseltfer They are written to inform those technicians of conditions that may occur on some vehicles or to provide information that could assist in the proper service of a vehicle Properly trained technicians have the equipment tools safety instructions and know how to do a job properly and safely If a con dition is described it cannot be assumed that the information applies to all vehicles or that all vehicles will have that condition All materials and programs described in this magazine are subject to change Submission of materials implies the right to edit and publish Inclusion in the publication is not necessarily an endorsement of the individual or the company TechConnect is published for ACDelco by Sandy Corporation Troy MI 2012 ACDelco All rights reserved Tech2Win Application continued from page 1 After installing the Tech2Win 2 Since Tech2Win does not have a Tech2Win uses Communication Port application a software download also is current license a license dialog comm port 9 on the PC If this port is required to download the diagnostic box will appear Click OK used for other devices switch the software for the desired vehicle cover 3 When the MDI is detected a comm port setting by selecting the age includin
28. n for the Diagnostic Hotline Technicians can call 1 800 825 5886 prompt 2 for assistance from 8 a m to 8 p m ET Monday Friday intermittent Brake Lights 2004 2008 Chevrolet Malibu Chevrolet Malibu Maxx 2005 2009 Pontiac G6 2007 2009 Saturn AURA 2008 Chevrolet Malibu Classic 2008 2009 Chevrolet Malibu High resistance in the Body Control Module BCM C2 or X2 connector specifically pins 18 31 and 59 due to terminal fretting corrosion may cause intermittent brake light operation Other conditions may also include extended pedal travel required to shift out of Park cruise control that does not function correctly and DTC C0131 C0161 and or C0277 may be set Do not replace the BCM for this condition Disconnecting the C2 or X2 connector adding dielectric lubricant clear gel GM P N 12377900 apply with a one inch nylon bristle brush and reconnecting the connector will correct the high resistance condition due to terminal fretting corrosion Use a scan tool to check that the Brake Pedal Position Sensor BPPS ratio is equal to the BPPS learned home when the brake pedal is not depressed If they are equal the brake lamps should be operating correctly If they are not equal perform the Brake Pedal Position Sensor Calibration procedure in the appropriate Service Information to complete the repair New Design Cylinder Heads 2007 2009 Pontiac G6 Saturn AURA 2007 2010 Saturn OUTLOOK 2007 2011 Ca
29. n license countdown in the lower right Quick Reference Guide go to TIS2Web 1 Connect the MDI to the computer Power it using the AC adapter 3 Install the Tech2Win application corner will be updated to 30 This is the News and select the Tech2Win Quick using all the default selections number of days until the license must Reference Guide Installation should take less than be renewed When the license expires The subscription options for the 10 minutes an expiration message will be dis Tech2Win application are 4 Two icons will be placed on the played To renew the license use the PC desktop a shortcut for security access service or update the 55 for 3 days Tech2Win QuickStart and a short diagnostic software using the standard 225 for 1 month cut for the Tech2Win Configurator update mode which is used for multiple versions 550 for 1 year of Tech2Win depending on the The TIS2Web subscription for one vehicles being serviced year is 1 395 After the application installation is 32 Megabyte Go to www acdelcotechconnect com complete the diagnostic software for and click the GM Service Information the desired service coverage and soft Pross ENIEF to continua a link on the home page for more ware license must be obtained To easy tothe merlot b information download 1 Click the Tech2Win QuickStart icon that is now on the PC s desktop Thanks to Mike Waszczenko and Bob Stewart License counter Pow
30. nd 70 amp hour rating is available to power customerinstalled accessory equipment It is located on the passenger side of the trunk and also has an external vent The auxiliary battery is connected to the vehicle s charging system through an Isolation relay to pre vent electrical loads trom depleting the primary battery if the engine is not running and the ignition is off e Remote Keyless Entry When the Unlock or Lock button Caprices is depressed no exterior lamps or audible sounds are activated however the interior standard equipment dome lamp will illuminate at night unless option 7Y6 inoperative dome and courtesy lamps is ordered e Infotainment The Map Nav Aux and Media buttons on the AM FM radio are inoperable for all North American Thanks to Ange Girolamo and Brad Thacher Updated ABS Operation and Diagnosis Training Course The variations and advancements of Antilock Braking Systems ABS have led to increasing numbers of components that aid vehicle braking and more From Dynamic Rear Proportioning DRP and the Traction Control System TCS to the Vehicle Stability Enhancement System VSES and Electronic Brake Distribution EBD ABS has developed into much more than simple wheel speed sensors sending signals to an Electronic Brake Control Module EBCIV Technicians looking to learn more about DRP TCS VSES and EBD should check out the updated ABS Operation and Diagnosis Instructorled Training ILT
31. nd fuel tank should be inspected for signs of fuel contamination If the vehicle is driven for an extend ed time with cont amination in the fuel rail it may result in a sticking valve If sticking valves are a concern after cleaning the fuel system the valves can be cleaned following the cleaning procedures in the appropriate Service Information The vehicle should be driven a minimum of 50 miles 80 km before evaluating the vehicle again in order to allow the fuel additive to work Deposits on an intake valve right from an engine using gasoline with the legal minimum additive The entire fuel system should be flushed and the fuel tank removed emptied and cleaned If the fuel tank is only drained the condition may return within a few hundred miles Fuel System Cleaning If fuel contamination is present refer to the fuel system cleaning procedures in the Service Information and clean the inside of the fuel tank fuel lines and fuel rail Once the entire fuel system is cleaned and reassembled the fuel injectors also should be cleaned Any time fuel contamination is the cause of an engine performance condition advise customers to only use fuel from high quality high volume TOP TIER gasoline stations General Motors BMW Honda Toyota Volkswagen and Audi developed the standards for the TOP TIER detergent gasoline in 2004 when it was determined that the current EPA mini mum detergent requirements do not go
32. nge of body styles efficient powertrains and connectivity technology the Chevrolet Silverado can be configured for just about any job whether hauling equipment and a crew to a job site or towing a camper for a weekend getaway The Silverado 1500 lineup is built on GM s full size truck architecture which supports a smooth ride and confident handling GMC Sierra The 2012 GMC Sierra lineup features Vortec powertrains backed by fuel saving six speed automatic transmissions They help Sierra models deliver among the industry s best fuel economy and performance including up to 22 mpg on the highway for the Sierra XFE and up to 23 mpg on the highway with the segment exclusive Sierra Hybrid Sierra and Silverado Powertrain Options e 4 3L V 6 LU3 rated at 195 hp 145 kW and 260 Ib ft of torque 351Nm e 4 8L V 8 L20 E85 capable with iron block rated at 302 hp 225 kW and 305 Ib ft of torque 412 Nm e 5 3L FlexFuel V 8 LMG E85 capable with iron block and Active Fuel Management rated at 315 hp 235 kW and 335 b ft of torque 452 Nm e 5 3L FlexFuel V 8 LC9 E85 capable with aluminum block and Active Fuel Management rated at 315 hp 235 kW and 335 Ib ft of torque 452 Nm Genuine E Parts The Technical Side e 6 2L V 8 L9H with E85 FlexFuel capability an aluminum block and variable valve timing rated at 403 hp 300 kW and 417 lb ft of torque 565 Nm This engine is available in c
33. ns to flush the system Always flush the power steering fluid in the lines before removing an old or damaged pump Use the adapter and vacuum pump to apply a vacuum to the system Training Tips Along with the Power Steering System Bleed Procedure other online videos covering power steering system service can be found on acdelcotechconnect com continued on page 3 2 TECHCONNECT ACVDelco Volume 18 Number 6 TS PU 0006 11 ACDelco TechConnect is published bi monthly and online for technicians to provide timely service information increase knowledge and improve the performance of the service center ACDelco 360 represents our mission to look at our businesses at every possible angle to provide value and assistance to our distributors and their customers as well as offer a full circle of support with programs tools training and marketing focused on enhancing and growing our partnership successfully Publisher Rick Balabon ACDelco E mail lt richard balabon gm com Editor Greg St Aubin ACDelco E mail lt gregory staubin gm com Technical Editor Mark Spencer E mail lt mspencer gpworldwide com Production Manager Marie Meredith Desktop Publishing 5by5 Design LLC E mail lt 2 dkelly 5by5dzign com Write to gt lt ACDelco TechConnect PO Box 500 Troy MI 48007 0500 On the Web 2 To read and search recent issues of TechConnect online www acdelcotechconnect com c
34. nsights Headquarters 2604 N E Industrial Dr 230 N Kansas City MO 64117 E mail dealersupport proactgroup com Compliments of your GM dealer We invite your input and suggestions Please address letters to the editor to the above address Letters submitted imply the right to edit and publish Every effort is made to ensure the accuracy of the information in the offers contained in this magazine However printing and typographical errors may occur These are not intentional and are not the responsibility of GM any GM dealer or the companies or individuals who create produce and distribute this magazine Offers and pricing may change at any time without prior notification The descriptions and specifications in this publication were in effect at the time of approval for printing General Motors reserves the right to change specifications without notice and without obligation Published letters do not necessarily reflect the opinions of General Motors or General Motors Parts General Motors Detroit MI 48202 2012 General Motors All rights reserved Ea Jan Mar 2012 Servicelnsights Genuine il Parts GM Promotions Update overPOWER Expands Parts program is an overwhelming success for customers Already offering superior products the form of parts typically needed to fully complete a powertrain overhaul replacement or rehab Some 550 parts numbers in categories ranging from pulleys and GM Customer Care amp
35. o honor the bloodline of the classics he s en trusted with and the dreams of his customers Genuine El Parts One recent project where that tradeoff played out was this 1971 Chevelle SS wagon resto mod Rather than choosing an LS engine Lilly installed a Ramjet 502 Paired with a six speed transmission the fuel injected engine delivers an affordable package of substantial horsepower and torque When the customer got the car he called it a real beast he hadn t been expecting that much power Lilly says That engine is built for torque and at the end of the day that s what moves a car not horsepower Choosing the more budget friendly Ramjet gave Lilly more wiggle room to spend time on the project s cosmetics That paid oft handsomely as he labored to give the tired earth toned Chevelle a new lease on life with a riveting purple paint job black leather bucket seats a fold down rear seat and a 3 inch chrome exhaust Genuine ag Parts e z i ee ee ee ee Oe E Jan Mar 2012 Servicelnsights 11 Genuine iil Parts We re one stop For your shop Genuine GM Parts Engines and Transmissions Plus all the associated parts you need CLIP AND PLACE BY YOUR TELEPHONE Genuine jou i Parts Give us a call for all of your Genuine GM Parts needs all at one convenient location
36. od ernization projects Jeff Lilly owner of Jeff Lilly Restorations in San Antonio Texas strives to give customers full value for the considerable sums they plop down And he wants to justify the expenditure every step of the way not just at delivery We take a lot of photos as we move through projects so we re able to show customers who mostly aren t local and who are paying by the hour what we re doing and prove the work was done he says Photos also keep the customer connected and involved in the restoration process An area of special emphasis in most projects is body structural and cosmetic work Lilly strives for museum quality paint finishes and structural fits that can hold up to the closest scrutiny With resto mods the majority of his work Lilly is typically working with classic car customers who want to show off enjoy and even hand vehicles down with pride To achieve the perfect exterior look he puts a premium on the painting phase from prep to color selection to final application Accomplished in the block sanding technique honing it as a boy working for his father Lilly devotes scores of hours to cultivating a base that will yield a pristine finish Then he applies the ideal color paint preferably a saturated color that shows off well 1971 Chevelle SS wagon resto mod 10 Jan Mar 2012 Servicelnsights Lilly s passion is crafting a beautiful specimen But he s no less concerned with the mech
37. rew cab and extended cab models Chassis and Suspension Details A coil over shock front suspension delivers linear handling characteristics on all road surfaces e Arack and pinion steering system provides precise control and strong on center feel e A Hotchkiss type rear suspension provides superior isolation and ride with a splayed arrangement for the shock absorbers e Four channel ABS is standard on all models and is linked to the StabiliTrak electronic stability control system to help mitigate the occurrence of rollover events e StabiliTrak electronic stability control system is standard on all models and now includes electronic trailer sway control and hill start assist e Wide front and rear tracks 68 1 inches 1 732 mm front 67 inches 1 702 mm rear enhance handling and vehicle stability for a more confident road feel A stiff frame reduces vibrations transmitted to the passenger cabin while the strength and accuracy of the fully boxed frame also enable precise mounting and tuning of chassis and suspension components Even though the 2012 Chevrolet Silverado and GMC Sierra are new vehicles extensive service and repair information resources are a click away at www gmtechinfo com Electronic Service Information Technicians and shop owners can log on to the site to gain access to subscription services for service procedures and repair manuals A complete Service Manual is accessible 24 7 through a subscr
38. runk An external vent carries gases out side the passenger compartment If the battery is replaced be sure the replacement battery Incorporates the external ventilation feature and be sure the ventilation tube is properly installed To ensure that the battery Is delivered in the best possible condition a blue transit isolation connector Is located above the battery in the vehicle trunk When the vehicle is shipped It Is disconnected In 2011 model year vehicles Primary battery in trunk location with blue transit isolation connector continued on page 6 5 TECHCONNECT Caprice Police Patrol Vehicle continued from page 5 isolating circuits that contribute to parasitic battery drain This connector should remain disconnected if the vehicle is stored for a period of time Special Features The Caprice PPV is available with several unique standard or optional features including The transit isolation connector must be connected to enable operation of the radio HVAC instrument cluster and central locking Connect the two blue mating connectors until a click is heard After connecting lightly pull to confirm the U S only e Stealth Mode Exterior and interior lamps can be turned off by momentary rotation of headlamps switch to OFF connection and that the connector halves cannot be easily e OnStar The Caprice PPV is not equipped with OnStar separated An auxiliary battery with 600 CCA a
39. sizing component parts in the course of fleshing out the overPOWER program Much of the increase in overPOWER qualifying parts numbers for 2011 came in Jan Mar 2012 Servicelnsights EJ GM OE Service Parts Update Two new GM engine families join reman cylinder head line up OHC cylinder head repair jobs for GM vehicles powered by High Feature V6 and LLR 3 7L Inline 5 engines can now be performed with remanufactured and now value priced Genuine GM Parts cylinder head assemblies Complete assemblies remanufactured to exacting GM specifications are available for repairs to these popular models e Many late model Buick Rendezvous LaCrosse and Allures Cadillac CTSs and SRXs and Saturn Vues equipped with HF V6s e GMC Colorado and Canyons with Inline 5s Complete Engine 2005 3 5L V6 VVT LY7 RWD for Cadillac SRX 4 Jan Mar 2012 Servicelnsights Coincident with the new applications GM Customer Care amp Aftersales is announcing more competitive pricing for all reman cylinder head assemblies including previously introduced reman assemblies 2 2L Ectoec 4 2L Inline 6 and 3 5L Inline 5 and 2 8L Inline 4 engines used in many late model vehicles Lower Pricing 12 month 12 000 mile Warranty Lower pricing along with the assurance of remanufacturing done to exhaustive and detailed GM reman Standards and the protection of a 12 month 12 000 mile warranty gives Independent Ser
40. vice Centers ISCs another reason to consider the reman option Quality is a particularly important variable when it comes to OHC heads because they re more highly engineered than OHV heads Properly done remans are a better bet to secure quality and reliability than simple rebuilds OHC heads have a lot more complexity in castings machinings and components says Keith Loch product specialist with GM Engines and Transmissions We advise rebuilders and ISCs to use OE OHC heads and to use a reman product as opposed to sourcing a rebuilt product In going well beyond a typical head rebuild GM produces remanufactured assemblies from previously manufactured heads adding new key components like camshaft retaining caps intake and exhaust valve seats and valve springs oil seals and guides Reflecting OEM updates and technical service bulletins the design enhanced assemblies conform to full and current OEM specifications As close to brand new as you can get and now priced to be competitive with rebuilt heads GM s reman cylinder head assemblies give ISCs what might be the ideal middle ground solution The most important thing these offer is the ability to get the job done right the first time Loch says With these heads you get something remanufactured and enhanced not something just rebuilt and sold as a fixed cylinder head I5 Cylinder Head Assembly Genuine il Parts GM Performance Build
41. vicelnsigh INDEPENDENT SERVICE CENTERS E Parts ACDelco ite a 2 Sti l th E t T T gt Parts program is overwhelming success for customers i e es i n ra C gt Two new GM engine families join reman cylinder head line up gt TechConnect insert with more valuable service info Lea d rs h i D D S ism gt GM Performance Build Center lets LS7 LS9 buyers help assemble their masterpiece gt Leading with Connect and Cruise Chevrolet Performance emphasizes and Performance PRALINE TGE RED S gt San Antonio resto shop owner respects tradition as he chases perfection gt GMC Sierra Chevrolet Silverado al Vi Te i a o q ir a UNM ns a ee eee Op C oe ee 2s CONTENTS GM Promotions 3 The Technical g Update Side Discover new ways to approach service and repairs GM OE Service 4 Repair Industry Fi Parts Update News amp Updates Business 1 0 of Repairs The latest word on Get state of the New ideas that can product development industry perspectives benefit how your shop and technologies from GM insiders operates and profits Genuine J Parts GM Servicelnsights Online More Genuine GM Parts resources and links l l l l l l l l l Download this issue and past issues of GM Servicelnsights magazine at i www gmserviceinsights com l i OFA l l l l l l l l l l l l l l l GM Servicel
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