April/June 2010 - GM Service Insights
Contents
1. Climate Protection Pledge Exam and Pledge If you re not a member log In and create a profile There is no charge for the exam Computer Based Tests Offered Automobile Advanced Automobile Auto Parts Auto Service Consultant Med Heavy Truck Collision If you have met the requirements you will be notified your shop will be added to a shop locator list available to mobile A C repair customers and you will receive information on how you can promote the U S EPAs recognition to mobile A C repair customers Go to WWW aS COMm for more information 3 TECHCONNECT Battery Charging Guidelines A customer with a bad battery typically expects something to be done about it immediately The customer may not understand that the battery may be good but simply discharged Customers who want to get back on the road quickly may demand a new battery under warranty There are two things wrong with this approach First if the battery is other wise serviceable it may only need a recharge to return it to health Second unless the cause that discharged the battery is resolved neither a new battery nor recharging the original battery will solve the real problem The technician s job is to recharge the battery quickly and safely and determine and repair the cause of the battery becoming discharged Testing a battery using a conduc tance type tester can determine if the battery is good and can be recharged C2. Controlling Diesel Emissions he hiest U5 ERA diesel amissio regulations wee designed to combat diesel pollution ard odtain gssolina lke amissnons standards from diesel oovwered vehicles Te achieve these goals all diese engines produced since 2007 must meet a reduchon of nitrogen cade NOx and hydroceions HC by 60 and particulata matar by 802 over aher 2004 emission siarada In addiion Ultra Low Suur Gase ULSD fus must mave grw reduction in the sullur content of hinawy diesel fl Accord ng to the EPA seme stiches show that the use of LILSD alone can reduce perticulata mattar emissions oy between THOS However of greater significance es that this deener fuel enables the use of advanced allerbreat err Technolgies on mea aig ines Emissions Control Technologies Some of the omissions control technologies of the Ouramaw B L diesel engine in Cheveolet and GMC light duty truces and vara and madiureduty ducks mcluds e Ciegel Osidaton Catalyst OCH and a Diese Exhaust Pertieu ate Fiter MPF The COC reduces hedrecarbons and oxides of niirogen carbon mondkide and adorcaysing compounds It alse turma the majority of emisshans into water ard oxycper The DPF traps the particu ate mater sold partides chet aopcar as bank smoke from the onging ox aust betong they canbe emitted mto the atmoaphers The DOC anc DPF era installed in the exhaust ayete To prevant clogging paitia matier it the OP 1s period cally burned off avi
3. Ina hybrid the engine is usually the larger of the two propulsion sources It all adds up to a vehicle i that takes energy savings and environmental friendliness to a new level without a performance compromise Volt Links www chevroletvolt com Go to the Chevy Volt Web site for the latest news www chevroletvoltage com A way to connect with other electric vehicle enthusiasts www facebook com chevroletvolt With Facebook you can join a community of Volt fans The 2010 75th Anniversary Diamond edition Chevy suburban It is distinguished by a White Diamond Tricoat exterior color and Cashmere interior along with unique 20 inch chrome clad wheels and new roof rack rails Special badging adorns the C pillar sail panel and steering wheel center cap while Diamond Edition lettering is used on the sill plates and is embroidered on the front headrests The anniversary models are equipped with LTZ con tent and are offered in 1500 2WD or 4WD configurations Apr Jun 2010 Servicelnsights The Technical Side cont d From page 7 75th Anniversary Suburban The content of the 75th Anniversary Diamond Edition V 8 with variable valve timing and E85 FlexFuel capability Suburban is unique but it s built on a foundation of 2500 models E85 comprises 85 percent ethanol and strength and capability that has propelled the brand for 15 percent gasoline reduces greenhouse gas and smog more than seven decades forming e
4. l l l l l l l l l l l l www gmserviceinsights com GM Servicelnsights Headquarters 2604 N E Industrial Dr 230 N Kansas City MO 64117 E mail bdavid proactgroup com Compliments of your GM dealer 290 HP 350 Crate Engine Great option for truck or car engine replacement 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 General Motors Parts General Motors Company Detroit MI 48202 2010 GM Company All rights reserved CONTACT YOUR GM DEALER Genuine Parts Product Update SHOP GM PERFORMANCE PARTS FOR THE PROVEN AND THE NEVV One good choice might be the 350 290HP 12499549 Offering outstanding performance and value it
5. lt DEPENDENT SERVICE CENTERS _ ACDelco ALSO IN gt Shop GM Performance Parts for the Proven and the New gt New and improved transmission fluid replaces Dexron Ill gt Program offers head to head pricing on 200 GM Engine and 400 GM Transmission part numbers gt It s almost time to Volt gt Chevy Suburban 75 great years and counting See Work in Progress 70 Chevelle SS Goes from Base Stock Car with Original Sheet Metal to 430 Horse Show Car CONTENTS GM Parts The Technical Product Update Side The latest word on Discover new ways product development to approach service and technologies and repairs Business of Repairs New ideas that can benefit how your shop operates and profits Repair Industry News amp Updates Get state of the industry perspectives from GM insiders Genuine Parts GM Servicelnsights Online GM Performance Parts Crate Engines More Genuine GM Parts resources and links Download this issue of GM Servicelnsights and past issues of Movin Parts magazine l l l l l l l l l l l l l GM Performance Parts crate engines offer uncompro I mised performance plug and play installation and an I unmatched value How can you go wrong Don t waste l your time and money rebuilding a tired old engine l 2 year 50 000 miles limited warranty l Warranty covers both parts and labor l l l
6. method for reducing the formation of NOx Exhaust gas is reintroduced into the intake manifold through a valve diluting the intake charge and effectively reducing combustion chamber tempera tures and the formation of NOx A side effect of introducing external EGR to reduce NOx is that it causes the hydrocarbon HC levels to increase Internal EGR A more effective method of control ling emissions is to increase intake and exhaust valve overlap a version of D internal EGR Valve overlap refers to the amount of time in the fourcycle engine event when both the intake and exhaust valves are open A reversion occurs in the cylinder as the piston is moving down while both valves are open Exhaust gas is drawn back into the cylinder simulating an EGR function Being able to control the length of this event can substantially lower NOx HC levels are also reduced by re burning the tail of the exhaust event that is rich in hydrocarbons However placing the camshafts in a permanently increased overlap position would affect idle and low rom performance The greater the overlap the lower the intake manifold vacuum levels Fixed camshafts compromise between smooth idle good low rpm torque and high rom power But variable camshaft timing accommodates the sometimes divergent needs for power driveability economy and emission control Variable valve timing uses a cam phaser to dynamically change valve timing events relative to
7. s the best selling small block in the GMPP lineup It can be a better bet than a costly rebuild and it offers all the power needed 290 HP 5 100 rpm and 320 Ib fit of torque and 3 750 rpm The new 350 290HP 19244450 offered from GMPP is also offered as a deluxe crate engine It includes an aluminum intake manifold and an attractive chrome dress up kit gi lt consisting of chrome valve covers chrome air cleaner chrome timing chain cover and chrome breather cap m ari ee a ae ce i L j fa f ma p ef Ff Ff E a IFE 350 290HP Dyno Chart Another can t miss crate engine solution is the enhanced LS327 5 3L 19165628 With a newly available performance camshaft and Graftal coated pistons this engine that builds on the legendary Chevrolet small block V 8 cranks out in excess of 350 HP and 340 Ib ft of torque The package which includes a carbureted intake manifold gaskets and bolts and ignition coils brackets and plug wires isa simple yet powerful introductory LS engine for any street project Both the LS327 and the 350 290HP 19165628 come with the GM Performance Parts 2 year 50 000 mile standard warranty And what good would it be to show off an LS series engine without the finishing touches GMPP s new collection of LS valve covers give the perfect performance look and feel that any project car demands GM Performance Parts 5327 Crat
8. Exhibit at NACE gather Oct 11 13 Monday Wednesday for traditional educational sessions and product and service vendor Oct 11 13 expositions ASRW also incorporates Auto Glass Week at the Mandalay Bay dedicated to the automotive glass professional ASRW sponsor Automotive Service Association ASA Convention Center Las Vegas says moving CARS and NACE to its own time slot will ultimately serve the industry better ASA President Ron Pyle says a Stand alone ASRW will allow for more focus on naceexpo com a Apr Jun 2010 Servicelnsights ACDelco a YC eeN Fine Tuping En jine Rerionnance with Variable Valve Timing As emissions standards continue to grow stricter more devices have been added to vehicles to decrease pollutants ranging from the catalytic converter to exhaust gas recirculation EGR and variable valve timing VVT Many of these innovations have focused only on emissions however variable valve timing has provided a way to help control major pollutants while increasing torque and horsepower through finer control of engine operation At engine combustion chamber temperatures above 2500 F nitrogen mixes with oxygen to form oxides of nitrogen NOx a major contributor to smog Because each cylinder experi ences combustion temperatures well above that level a goal for all automo tive manufacturers has been to reduce combustion temperatures The use of an EGR valve was an early
9. best choice for virtually all GM vehicles The new product delivers on all of the criteria for transmission performance and protection assuring shops and vehicle owners that GM transmissions will operate properly Higher Performance Better Wear The result is more consistent shifting performance from less clutch shudder in modulated torque converters to smoother shifting during low temperature operation And it also translates to better wear protection There s less sludge and deposit formation improved oxidation and thermal stability and less wear on bushings bearings and gears due to enhanced foam control DEXRON VI is not just a bit better it s a vast improvement offering 200 percent more shear stability 150 percent better foam aeration 120 percent better clutch durability and two fold improvement in clutch friction stability and fluid oxidation With the release of the product shops should use it in 2005 and prior GM vehicles that now use the earlier generation fluid And vehicles 2006 and newer DEXRON VI must be used It is fully back serviceable for DEXRON Ill Ill H and IIE applications and meets GM specification GMN10060 Associated Parts Covered The overPOWER program also extends to associated parts To assist in making quality GM Parts a value proposition on your engine and transmission installs your dealer can The new overPOWER program includes over 200 Engine and 400 Transmission part nu
10. enroll in an Instructor Led Training ILT course click on the Enrollment link or the Instructor Led Courses link e To launch a Web Based Training WBT course click on the Web Based Courses link to view the catalog and select a specific course e To launch a TechAssist TAS course click on the TechAssists link to view the catalog and select a specific course e To launch a Simulation SIM click on the Simulations link to view the catalog and select a diagnostic challenge simulation New Training The following ACDelco training programs have recently been made available via the LMS S AT02 01 01WBT Automatic Transmissions This web based course provides an introduction to automatic transmissions including automatic transmission specifications powerflow through an automatic transmission the character istics of automatic transmission cases the proper operation of torque convert ers and the function of automatic transmission gear select indicators S AT02 02 01WBT Automatic Transmission Gearset The characteristics and operation of planetary and differential gearsets are covered in this web based course Also reviewed in the course is the disassem bly and assembly of gearsets as well as how to service differential gearsets S AT02 03 01WBT Automatic Transmission Mechanical Apply Components This web based course highlights the mechanical and apply components used in automatic transmissions T
11. piston timing by controlling the camshaft This allows the position of the camshaft to be changed dependent on need At idle and low engine load overlap is mini mum improving idle quality At higher engine speed and load overlap is increased allowing emissions to decrease March amp April 2010 Connec The cam phaser allows the PCM to change the relationship of the camshaft relative to the crankshaft permitting better control over emissions and performance Early cam phasers used a splined phaser which uses an internal piston that connects the exhaust camshaft and cam phaser sprocket together using helical splines forming an adjustable mechanical link The swivel action of the cam phaser or Exhaust Camshaft Position Actuator is accomplished via oil pressure applied by an oil control solenoid into the actuator s piston in the hub of the camshaft sprocket A PCM commanded control valve manages the oil pressure to the cam phaser internal piston The internal piston rides along the helical splines rotating the cam phaser gear and the camshaft opposite of each other changing cam timing continued on page 2 IN THIS ISSUE Fine Tuning Engine Performance with Variable Valve Timing 1 The A C Climate Protection Pledge 3 ASE Certification Tests suana 3 Battery Charging Guidelines 4 Remanufactured Rotating Electrical Product Upgrades ee 5 Controlling Diesel
12. quickly outfit a show car with one of GM Performance Parts revolutionary new E ROD emissions compliant crate engines In less than three weeks Janda had located a Car rounded up the necessary parts and marshaled the labor to do a job that might typically take three months But at the end of the day he had a glistening 1970 Chevrolet Chevelle outfitted with a ground breaking green high performance engine to show for his efforts And show it he did The car owned by Chuck Barnes owner of Nostalgic Auto Body in nearby Arlington Heights IIl made its date with the GM Performance Parts booth at the 13th Annual Hot Rod amp Restoration Trade Show in Indianapolis Timing was the big thing on the project he says Three weeks was a killer because had just lost a guy and was worried about getting all the parts we needed fast enough But my employees came through and was able to call in some favors from suppliers to get it done The E ROD engine a 6 2L LS3 rated at 430 hp was the least of his challenges It came from Gandrud Chevrolet Janda s longtime GM Performance Parts supplier in Green Bay Wisc The dealer s Chris Slack had approached Janda about doing the E ROD job in time for the Indianapolis showing Provided he could quickly find a Car Slack said Gandrud would supply the engine Within a day of lining up the car a half done project that had been languishing in Barnes shop Janda had the E R
13. to erat across the exhaust filtar On awe vahl cles a Clear Exhaust Fiber mostaza vill be displayed or a warming lamp will iuminate T Tr HA A inhija or nilip lanig welll bdie im degeneration is requiced tthe cond bons necessary for regeneradon do nct tase lace however thea ECM wil eventually illuminate the MIL and the Reduced Power waming Jamo he engine encers the Reduced Power mode which wall require The vehicle to oe Sef wes Passive Regeneration Passive fegenerabor pocurs when exhaust gas lamperdiure is Havated store SOOM rs Fi Thess aMmpertures may be raaciad whan the angine is under heavy load Sermvice Regeneration Service ragenereten s performed With The acan tool end is used to clean a scotoeded ilter duning a service visit Regeneration temperatures The caihaust system has boon designed to deal with the Tem Perdiunes involved in the ragenerstion process On long wheelbase roocels for instance a weet shiec protects the fear axia shock sheorbers All models have ar exhaust cooler at the and of the tailpipe A vacuum erated by the exhaust passing rough The opaergs draws in Cool aa which mines with The exhaust gases There are times when a DPF service regeneration Must be perhormed ih the servite Center This must be Gondiched outdoors The shop exhaust systern will re Karke the hoat Diesel Foc aod il Requirements The Gurarmnaz 68 diesel engine requires Ultra Linaw Sulfur Diesel w
14. Emissions 6 Tech Tips 2 7 Training Update 1 T 8 ON THE WEB www acdelcotechconnect com click the TechConnect Magazine link or Log in to the ACDelco LMS click the Resources link Product Offerings Distribution Network e Customer Programs Marketing Training E Business Relationships Variable Valve Timing continued from page 1 Spline phaser system A spring within the cam phaser holds the piston in an advanced position 0 when no oil pressure is applied This allows the engine to start and run with the cam in the home position When cam phasing is desired the PCM can retard the cam position up to 25 50 of crankshaft angle by varying oil pressure to the piston through the control valve Vane Phaser Later VVT systems on some twin cam engine designs use a vane phaser on each camshaft Inside the vane style actuator assembly are a rotor and stator that are not mechanically linked togeth er Instead oil pressure is controlled on both sides of the vanes of the rotor giv ing a hydraulic link to the stator Varying the balance of oil pressure on each side of the vanes is how the cam is phased Vane phaser At idle the exhaust cams operate at full advance for minimum valve overlap Optimizing valve overlap eliminates the need for a separate EGR system and air injection reaction AIR The camshafts are driven by a roller chain A hydraulically oper
15. OD engine Over the next several days he contacted parts suppliers but feared order backlogs would be a problem Instead they rallied to the cause expediting the shipment of some 40 000 worth of parts that would be needed to complete the project Genuine aa Parts While the project was a push to complete Janda says it wasn t due to technical problems related to the engine It installed smoothly requiring only minor work arounds The cross stock member had to be notched and reboxed for adequate oil pan clearance motor mounts had to be tweaked and the transmission tunnel had to be refashioned for a new 5 speed manual transmission It was a mostly plug and play installation without a lot of fabrication needed he says Once we got it completed it started right up and ran smoothly With the dealership graciously including the engine he paid for the parts and Frame Up s labor but handled EEE EEE EE EE EE EE EE EE EEE the E ROD mint green paint job himself With a package that includes a Keisler Engineering Genuine ii Parts five speed with a hydraulic clutch and drive shaft shifter Detroit Speed rear suspension Global West suspension control arms Rock Valley stainless steel gas tank with an LS style pump an AutoRAD custom built radiator and a Vintage Air AC Climate System the Chevelle is a standout example of what can be done with GM s new E ROD engine For more pictures and information on the thre
16. ach vehicle maintains its solid Replacement performance and uncompromised safety l S features for the life of thevehicie 3 Cut the belt 1 from air conditioning A C and crankshaft pulleys 1 Remove the accessory drive belt Refer to Drive Belt Replacement Accessory 8 Apr Jun 2010 Servicelnsights Genuine 1a Parts ee Procedure Drive Belt Replacement Accessory ote Removal Procedure 1 Remove the air cleaner outlet duct Refer to Air Cleaner Resonator Outlet Duct Replacement Position the belt behind the rear face of the Install a breaker bar with hex head socket to the drive belt balancer 1 and off of the tensioner bolt A C pulley 2 i Install the belt installation tool 3 onto the balancer Rotate the drive belt tensioner clockwise in order to relieve tension on the belt Remove the drive belt 1 from the pulleys and the drive belt tensioner Slide the belt installation tool 1 upward installing the belt 2 onto the belt installation tool 5 Slowly release the tension on the drive belt tensioner Remove the breaker bar and socket from the drive belt Slide the belt installation tensioner bolt tool downward positioning the belt onto the A C pulley applying light tension to the belt 7 Clean and inspect the belt surfaces of all the pulleys Installation Procedure Route the drive belt 1 around all the pulleys except the idler pulley Install the breaker ba
17. and rear tip inserts for the 2 and 3 leaves on top of the tip inserts and in between the 1 and 2 and 2 and 3 leaves Periodic cleanings and grease re application may be necessary throughout the life of the vehicle If this procedure does not correct the noise on 1500 Series 1 2 ton models built prior to October 2004 the noise may be caused by an incor rectly dimensioned splay clip the band holding the ends of the leafs together that interferes with the leaf springs A 5 mm 0 197 in wider splay clip was introduced early in the 2005 model year to provide additional clearance To correct this condition it may be necessary to replace the rear leaf spring assembly There was no change to the part number For more information refer to GM bulletin 06 03 09 004B Diagnostic Assistance For tree technical diagnostic assistance and product information regarding specific 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 1 866 833 5567 Wiper Blades 1 800 810 7096 Traininc How to Take ACDelco Training Go to www acdelcotechconnect com and click on the Training tab to log on to the ACDelco Learning Management System LMS e To
18. ated tensioner keeps proper tension on the chain even as it stretches with mileage a normal occurrence in all chains which elimi nates need for periodic replacement or adjustment The cams operate directly on rollertinger followers which actuate the valves A return spring sits under the reluctor of the actuator to help keep it at a 0 home position The actuator contains two cavities for oil to flow into to either retard or advance the cam The tourway PVVM oil control valve OCV controls which cavity receives pres Surized oil New vane phaser systems feature an electromagnetic coll situated on the oll control valve mount ed directly on the front of the camshaft Intake Camshafts Exhaust cam phasing benefits are reduced emissions and greater fuel economy however intake cam phasing provides increased low end torque and high end power Instead of moving the intake cam to effect overlap in the exhaust stroke intake closure Is delayed at the bottom of the intake stroke At lower speeds an open intake valve during the first few Driveability conditions can be caused by any oil debris on the oil control valve solenoid degrees of compression can lead to air being pushed back out the Intake valve as the piston moves upward But at higher speeds the open intake valve allows the air that s been moving into the cylinder to keep coming In under the momentum the air charge has acquired The result is a
19. cylinder with greater volumetric efficiency Exhaust and intake cam phasers Overhead cam engines that phase both intake and exhaust cams use a vane phaser Pushrod engines with variable valve timing on their single cam in block engines also use a vane phaser but these engines differ trom overhead cam engines in that they push the oil control solenoid back into a hollow portion of the front of the camshaft Four small oil holes are situat ed in the camshaft to line up with the oil control valve solenoid Thanks to Mike Militello 2 TECHCONNECT ACVDelco Volume 17 Number 2 TS PU 0014 10 ACDelco TechConnect is published bi monthly and online for technicians of Total Service Support TSS and Key Fleet accounts to provide timely service information increase knowledge and improve the performance of the service center Publisher Mike DeSander ACDelco E mail lt mike desander gm com Editor Mike Militello ACDelco E mail lt michael militello gm com Technical Editor Mark Spencer E mail lt mspencer gpworldwide com Production Manager Marie Meredith Desktop Publishing 5byb Design LLC E mail lt gt dkelly bby5dzign com Write to DMX ACDelco TechConnect PO Box 500 Troy MI 48007 0500 On the Web To read and search recent issues of TechConnect online www acdelcotechconnect com click the TechConnect Magazine link or Log in to the ACDelco LMS click the Res
20. e Engine Continued on page 4 my PERFORMANCE fel PARTS s s a a a Apr Jun 2010 Servicelnsights EI Product Update cont d Seven styles are available in a mix of natural polished and chrome finishes and callouts are available for favored nameplates and vehicles Nothing finishes off your engine like a great looking set of valve covers straight from GM They re designed and built to production specifications and include a production type O ring gasket for a leak free fit Nameplates include two Corvettes red and black lettering and one each for generic Chevrolet Camaro Pontiac and GM Performance Parts LSX The GMPP Commitment GM Performance Parts crate engines undergo extensive full power engine dynamometer validation that requires the engines to perform from peak horsepower to peak torque That commitment to quality and durability enables General Motors to back GM Performance Parts crate engines with a 24 month 50 000 mile warranty whichever occurs first All GM Performance Parts components carry a 12 month 12 000 mile warranty To shop for GMPP products or for more information contact your GM Dealer or visit www gmperformanceparts com Apr Jun 2010 Servicelnsights Replacement for DEXRON III New and improved DEXRON transmission fluid available Replacing DEXRON III the new GM branded and approved fluid offers improved performance ina number of key areas making it the new
21. e failure of starters For instance oil intrusion into a starter will degrade the brushes to the point where they will not make good electrical contact with the armature commutator Inspect the old starter if it appears to be oil soaked repair the source of the leak i e valve covers Intake valley etc Fixing the oil leak will reduce the chance of a customer comeback When using a conventional charger limit the rate to 10 amperes or less Do not allow the battery to charge at 3 amperes or more for longer than 10 hours or 10 amperes for longer than 5 hours When these limits are reached allow the battery to stand overnight and then resume charging if further charging is required More Information For more information on how to prevent early failures of alternators and starters check out the Comeback Prevention seminar S DS11 01 01SEM To learn more about the latest technology used in modern charging and starting systems attend the Advanced Charging and Starting Systems Diagnostics seminar S ELO6 20 01SEM Contact your local ACDelco distributor to learn when a seminar will be held in your area Thanks to Bob Malone Check the voltage every 30 minutes and remove the battery from charge when the voltage reaches 15 volts at 3 10 amperes The state of charge should be at 90 95 Refer to GM bulletin 02 06 03 009C for additional information on battery charging Thanks to Mike DeSander 5 TECHCONNECT
22. e week rebirth of the 70 Chevelle SS go to frameupwheelworks smugmug com Projects Chuck Barnes E Rod 1970 Transfer Cases GM Parts Transter C pes ane ongeingorad to OEM specifications and updated to the latest specifications It gives you assurance that your customer s GM Transfer Case is of the same quality as the one that came with thelr vehicle ae Terr rrr Ell 3 Year 100 000 Mile Warranty Includes Parts and Labor CONTACT YOUR GM DEALER Genuine 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 f l Genuine Parts i l l l I l l 1 Remanufactured J Automatic Warr i 1 Transmissions oe ia I l l Contact your Each GM Remanufactured Automatic Transmission passes a series of rigorous tests before it goes into a GM vehicle O C a GM Remanufactured Transmissions are calibrated for a specific late model GM vehicle to maintain its original performance I Up to 3 Year 100 000 mile transferable limited warranty I Technology updated to latest GM standards I G M D C a C r Performance tested to ensure proper function I I T I fo r a of yo U r GM Transmissions are time i and money savers with easy Pa rts needs plug n play installation p l l l CONTACT YOUR GM DEALER s I l l
23. em elastomeric components and contaminate the component fluid leading to loss of sys tem component durability and service life When necessary only the original approved system fluid should be used to flush these components using approved equipment If the engine coolant contains a considerable amount of sediment clean and flush the system followed by a thorough rinsing to remove all deposits and chemicals Refill with a minimum of a 50 mixture of the specified coolant and distilled water Refer to Chrysler bulletin 26 001 09 for more information OnStar Power Consumption 2000 2010 OnStarequipped Vehicles with Digital Hardware During battery parasitic drain testing it is Important to understand the power cycles of the various OnStar systems in order to avoid confusion about normal power consumption readings All OnStar customers with currently active vehicles have digital analog cellular capability A green status LED on the OnStar keypad normally indi cates an active OnStar account A red LED indicates a system DTC On Gen 6 and later systems a clear or dark LED may indicate the OnStar system has been deactivated or may possibly have a no power concern no communi cation The OnStar system will stay powered up after the ignition is off for an extend ed time in order to allow for remote services like door unlock horn chirp light flash etc to take place as requested by the driver Power cyc
24. es and transmissions in many cases a new GM engine can come in at a price that s competitive with an aftermarket reman Apr Jun 2010 Servicelnsights 5 ACDelco TECHCconnect Repair Industry News amp Updates cont d Gets Its Own Spotlight dion of the automotive Aa repair industry CONGRESS OF AUTOMOTIVE REPAIR amp SERVICE We re pleased that our plans to produce a dedicated event for all automotive service and repair professionals regardless of industry matters of interest to service professionals and will appeal to a This year the International international Autobody Autobody one a ha affiliation business model specialty or discipline have Congress amp N finally come to fruition he says Our mission is to make Exposition NACE ASRW the only destination necessary to address the and the Congress y _ ft 00 RSA needs of the professional service and repair community of Automotive i The World s Collision Repair Event Repair amp Service CARS events which comprise Automotive Service amp Repair Week l ee ASRW will be staged in October at the Mandalay Bay Qe nuine gi Parts Convention Center For the last three years ASRW has been staged under the broader aftermarket parts and service industry umbrella of AAIW held each November This year collision Look for the Genuine GM Parts repair and automotive service professionals only will
25. f the latest equipment It is the opera tor s responsibility to control the charging process continued on page 5 State of Charge OCV conventional OCV flooded cell battery AGM battery 4 TECHCONNECT charge at 75 F 25 C charge at 32 F 0 C Monitor both charging current and voltage every 30 minutes Because voltage Is not held constant it will rise as the battery becomes charged When voltage reaches 16 volts reduce the charg ing current to 5 amperes When the voltage reaches 16 volts again at the 5 amp current the battery Is Tully charged Dead Cold A completely discharged battery will take more than twice as long as a half charged battery to bring the battery to a usable state of charge The elec trolyte in a discharged battery is largely water which is a poor conductor The battery may accept such a small amount of current at first that it appears not to take a charge Midtronics GR1 automatic battery charger Remanufactured Rotating Electrical Product Upgrades The ACDelco brand stands for quality To further enhance that reputation in the remanufactured rotating electrical aftermarket ACDelco has announced product upgrades to Line 33 Alternators and Starters On many top selling parts in the remanufac tured product line ACDelco will use 100 new regulators on alternators and 100 new solenoids on The gold sticker supports ACDelco quality
26. harging Ahead Battery charging involves applying sufficient voltage to the battery to cause current to flow through the battery Charging causes a chemical change In both the battery s plates and the electrolyte If the battery is simply dis charged but otherwise good apply ing a suitable current for enough time will eventually Conductance testers can accurately measure the performance of a fully charge battery in service the battery as much as is chemically possible However contin ued application of current can lead to overheating loss of electrolyte and shortened battery life The charging process requires time and current Multiply the charging rate in amperes by the number of hours and the result will be the ampere hours of charge applied to the battery To bring a battery to full charge will require roughly the same number of ampere hours at a low charge rate as It does at a high rate Put another way a higher rate will take less time Since most customers like to have their vehicles returned quickly it s desirable to get the charging job done quickly by using a high charge rate State of Charge Its not possible to measure a battery s state of charge In ampere hours so another method must be used Open circuit voltage OCV measured across the battery s terminals relates to the battery s state of charge The voltmeter must be capable of reading to the nearest 0 01 volt If
27. hich limits sulfur content to 15 pem ipeta par milkni Itako requires cil that conforns to the CH4 standarc established by the Aimencean Petroleun Institute Thia oil eliers lower ol corgurtotern and reduces liris for phosgri ms sukFur and ash Lene ath dl meedeed to eectericd the Pe ci the DPF as woll as to mouce ihe fommetion of engine sludge and deposits Thanes to Frank farmmambe 6 TECHCONNECT a ene PE FPFE ae Oe BE The following technical tips provide repair information about specific conditions on a variety of vehicles If you have a tough or unusual service repair the TSS Technical Assistance Hot Line can help Call 1 800 825 5886 prompt 2 to speak with a technical expert with the latest OEM information Fluid Flushing Requirements 2005 2010 Chrysler Dodge and Jeep vehicles Chrysler Group vehicle fluid systems do not require regular flushing These systems Include engine oil transmis sion oil axle lube brake fluid power steering fluid and refrigerant The only exception to this requirement are those fluid changes that are published in the vehicle maintenance schedules e g engine coolant and in instances where a failure has occurred and or the system has become compromised contaminat ed or overheated beyond the normal operating range Aftermarket chemicals to flush the engine transmission brake or steering systems are not recommended Chemicals contained in these products can damage the syst
28. le times vary depending on the generation of the OnStar system and may be powered up continuously from 48 hours to 120 hours after the ignition is off Technicians may identify the system generation by using a scan tool or by using Www onstarenrollment com The expected current draw of the OnStar module is IGN ON 240 to 400 mA IGN OFF 3 to 20 mA for 48 hours IGN OFF after 48 hours 120 hours on specified VCPs 0 2 to 0 8 mA Squeak Noise from Rear of Vehicle 1999 2007 Chevrolet Silverado Classic GMC Sierra Classic 2007 2009 Chevrolet Colorado Chevrolet Silverado GMC Canyon GMC Sierra HUMMER H3 HUMMER H8T A squeak noise may be coming from the rear of the vehicle During normal operation certain vehicles may exhibit a squeaking noise that may be traced to the rear leaf springs While this noise is an operating characteristic of leat springs the roads that the vehicle is driven on will affect the frequency and severity of this noise This condition may be due to debris getting between the leaf springs It has been found that the application of 7 TECHCONNECT grease to the rear leaf springs will correct this condition and do a better job of preventing the noise from reoc curring than replacement of the springs To grease the springs pressure wash the springs to remove as much dirt and debris as possible and dry the springs with compressed air Apply a liberal amount of grease under the front
29. mbers from Genuine GM Parts now available with discount 50 off your associated parts incredible savings from your GM Dealer order Call your GM Dealer for details This new conquest program is designed to meet the and or to place an order Since its unveiling aftermarket competition head on with GM quality and as a pilot program last November overPOWER has caught aggressive pricing overPOWER makes it easier than ever to on with more GM Powertrain dealers The number of make the best powertrain choice for you and your customer qualifying engines and transmissions has grown to the point where most of the high volume in demand products Start Saving with vour GM Dealer are included The GM Performance Parts 427 Anniversary When you have a repair or replacement job make Engine Is also included in the program your GM Dealer your first and last call The overPOWER program gives GM Dealers the power to sell engines and transmissions at prices most of the aftermarket competition can t best If you already have an aftermarket quote call your GM Dealer and put the overPOWER program to the test for yourself The program is ideal for ISCs who want to give their p customers the superior design performance warranty and support that comes with every GM Powertrain product Those are the features your customers value most when looking for replacement powertrain While the GM lineup of eligible products includes both new and remanufactured engin
30. missions is domestically produced and helps reduce dependence on petroleum Available Powertrains A Vortec 5 3L FlexFuel engine and fuel saving six speed automatic transmission are standard in Suburban half ton models enabling a maximum towing capacity of 8 100 pounds as 2 674 kg Suburban 2500 models offer a 6 0L six speed powertrain combination and a maximum towing rating of 9 600 pounds 4 354 kg Also available a is the Vortec 6 0L Vortec 6 0L V 8 for the 2010 Chevy Suburban Repair Procedure for the 2010 Chevy Suburban Even though the 2010 Chevy Suburban is a new vehicle 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 subscription to the site Free collision repair procedures will soon be available by going to www genuinegmparts com and clicking on GM Technical Repair Information This example of Air Conditionin e apeo Belt Replacement va Air Conditioning Compressor Belt Replacement V8 and Drive Belt Replacement Accessory Removal Procedure for the 2010 Chevy Suburban is just one of many found in the Service Repair Manual By following the proper repair procedures technicians can ensure 2 Remove the skid plate Refer to Engine Shield that e
31. n ash and yiebing carbon dioxide and Water his process ig caled particulte fie regeneration DPF Regencration DFF repersration may cczur wider gwere chicumeatanceas cellad Active Regansraron Fessive Mepaneration ad Servic Pier eration Active Regeneration The regeneration ope ation i9 nocirollead by tha angina codiml madula ECV which keeps track of the mileage driven the arrount of fus consumsd the hours of operation and the exhaust diFerertiel pressure DUL and DPF position om ihe mhanel syin Viren the canditions ers met tor regeneretion to occur the ECM enters a differant engine calibration strategy that Includes additonal fual bwection pulsas This heats the DOG agg its normal opereting tarmparatur aid ragereration begins For e process w complete sabstactonhy and a icienthy claan the filter te vehicle must be operated cocqtinususly for aporaximateby 13 minutes at speeds greater than SO raph E0 kev the engine is allowed te retum to idie during thes lire ihe dhe speed may be elevated slightly etc The operating sound may be ditterent This is nanmal and he driwer doesnt need to do ary trig During reanecation tha exhaust triperdture increases Igreater than 20 Cl vehicd converts the oarticulates into harmpess gases and ash The DPF is then clean ano ready to Mer gaticulatesa ager If normal diving does hot provide Ihe necessary conditions Tor neganerapon to occur the pressure aterential citiras
32. opics covered include operation of the 1 2 3 4 clutch characteristics of the 3 5 Reverse clutch operation of the 4 5 6 clutch characteristics of the 2 6 clutch operation of the Low and Reverse clutch and Low clutch sprag characteristics TS PU 0014 10 a S AT02 04 01WBT Automatic Transmission Diagnosis The processes and procedures for diagnosing automatic transmission concerns are discussed in this web based course It discusses the procedure for performing a preliminary inspection the process for performing a road test and the procedures used in post road test diagnosis S AT02 05 01WBT Automatic Transmission Hydraulics and Electrical Systems This web based course covers the components and operation of the hydraulic system and the electronic controls that drive the hydraulic system including the functions of the valves located in the fluid pump assembly the valves located in the control valve body and the solenoids contained in the solenoid control assembly The characteristics of the electronic control module the control module inputs and the transmission adaptive functions also are reviewed Current Instructor Led Training ACDelco s Instructor Led Training ILT courses provide hands on instruction on the latest automotive systems The following ILT courses are currently being held at training center locations around the country Click the Schedule link on the LMS Menu to search the latest training schedule f
33. or e Ultraviolet Dye Leak Detecting System e R134a Manifold Gauges e Vacuum Pump stand alone or built into R R R equipment e Temperature Measuring Devices digital thermometer digital pyro meter infrared thermometer e Hose Repair Crimping Tool if shop makes own hose assemblies e Spring Lock Coupling Service Tools e A C Fitting Service Tools e Orifice Tube Service Tools e Service Information Resources manuals specification books computerized information etc Technician Training All A C technicians are encouraged to complete a self study training program focusing on best practices for leak detection service and repair and refrigerant conservation These practices are designed to promote shop savings and efficiency consumer satisfaction and environmental protection The Best Service Practices Study Course booklet additional training information A C service pledge exam and the pledge application are available on the MACS website at WWW macsw org Take the Pledge To take the Climate Protection Pledge r aCertification Tests Summer 2010 Computer Based Tests Registration July 9 August 16 2010 Register by phone ONLY 1 800 525 6929 Testing Dates July 16 August 23 1 Go to www macsw org and click the Climate Protection Pledge link to download the Best Service Practices Study Course All A C technicians should study this booklet 2 Log in to the MACS website to take the Auto A C
34. or courses held in your area Course Number Course Name S FP08 02 OIILT Engine Performance Computer Controls and Ignition System Diagnostics S FP08 03 O1ILT Engine Performance Air Induction and Fuel System Diagnostics S EPQ8 04 01ILT Se Performance Fault Monitoring and Emission System lagnostics S EP08 05 01ILT Engine Performance Advanced Drivability Diagnostics S EP08 20 01ILT Toyota Engine Performance 8 TECHCONNECT Genuine Eg Parts The Technical Side It s almost time to Volt Chevy on the verge of Introducing new propulsion technology SEC e It promises to be a big deal for GM one that will vault the carmaker to the head of the class in the commercialization of green vehicle technology Unlike hybrid electric vehicles that use gasoline and electrical systems the E REV Volt is powered solely by an electric motor Its lithium ion battery designed to be recharged via a plug in to the electrical grid or an on board generator powers the motor under all speeds and power levels for up to 40 miles After that its gas powered range extending generator automatically kicks in to provide electrical power So Volt can go for several hundred additional miles until you can plug it in or fill it up again Indeed with the Volt the battery is its main power source The key to the technology is the sizing of the vehicle battery and propulsion system so that vehicle operation is not dependent on the engine
35. ources link ACDelco service tips are intended for use by professional technicians not a do it yourselfer 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 2010 ACDelco All rights reserved The A C Climate Protection Pledge It seems that the marketplace is finally ready to be green When it comes to vehicle air conditioning service potential customers are looking for service centers that have highly trained technicians and the proper equipment to provide environmentally friendly air conditioning service The Mobile Air Conditioning Society MACS Worldwide and the U S Environmental Protection Agency have developed the Automotive A C Climate Protection Pledge to help qualifying service centers be recognized for their environmental leade
36. r with hex head socket to the belt tensioner bolt Position the lower portion of the belt 1 with the ribbed area facing forward Slowly rotate the crankshaft pulley 1 in a clockwise direction while using finger pressure to pull the belt 2 forward Ensure that the ribbed area of the belt remains facing forward and the belt aligns properly to the A C pulley Rotate the belt tensioner clockwise in order to relieve the tension on the tensioner Install the drive belt under the idler pulley Slowly release the tension on the belt tensioner Inspect the drive belt 1 for proper installation and alignment Remove the breaker bar and socket from the belt tensioner bolt Rotate the balancer 1 an additional 360 degrees to ensure proper belt installation Inspect the drive belt for proper installation and alignment Install the air cleaner outlet duct Refer to Air Cleaner Resonator Outlet Duct Replacement Install the skid plate Refer to Engine Shield Replacement 1 0 Install the accessory drive belt Refer to Drive Belt Replacement Accessory Start the vehicle and inspect the drive belt for proper operation Close the hood Apr Jun 2010 Servicelnsights E Restorer Suppliers Rally to Beat The Clock on 70 Chevelle SS Show Car Project Janda s shop Frame Up Wheel Works in Waukegan III had the honor and the distinct challenge of shepherding the resources needed to
37. rship in performing proper environmental mobile A C service American interest in the environment has grown recently According to the 2009 Cone Consumer Environmental Survey e 35 of Americans have higher interest in the environment today than they did one year ago e 35 of Americans have higher expectations for companies to make and sell environmentally responsible products and services e 70 of Americans indicate that they are paying attention to what companies are doing with regard to the environment today Service centers completing the Automotive A C Climate Protection Pledge commit to e Use required tools and equipment e Train technicians in Best Practices e Promote repairing of leaks and dis courage recharge of leaking systems Certify that all contaminated refrigerant collected is sent to a certified reclaimer Set continuous improvement goals Allow EPA to review pledge related publicity materials signs press releases advertisements etc before they are released Upgrade R R R equipment leak detectors Establish a tool and equipment maintenance program Establish a procedure for removal of refrigerant heels Train service writers or others who greet customers to explain the economic and environmental advantages of having leaks repaired rather than just having the A C system topped off Required Equipment e SAE J2788 RRR Equipment e Refrigerant Identifier e Electronic Leak Detect
38. starters These product upgrades make ACDelco the only brand using 100 new regulators and solenoids in our most popular remanufac tured parts New Quality Label The upgraded product will be easy to identify with the addition of a gold quality sticker applied to the top of the box Also chemical reactions in a battery are slower at low temperatures so a very cold battery will take longer to charge than one at room temperature AGM Batteries The Absorbent Glass Mat AGM battery uses absorbent glass mats to hold a small amount of electrolyte in contact with the plates The battery uses a gas recombinant technology where the gases produced at the plates are recombined to form water before they escape This battery design offers high power for lower weight and is more resistant to high temperatures vibration and cycling The upgraded products will be shipped automatically as new orders for alternators and starters are processed Root Cause When making repairs on rotating electrical systems in depth diagnosis is needed before parts replacement including checking other components and conditions that might affect system perfor mance such as any Diagnostic Trouble Codes battery health and The AGM battery may be charged using an fluid contamination automatic battery charger as long as the charger automatically adjusts the charging current as the battery nears full charge Fluid contamination is often the root cause of th
39. the battery has not been charged or used the engine started or the vehicle driven in the last 12 hours a reading may be taken If the battery has been discharged and recharged or used within the last 12 hours connect a carbon pile and load the battery at 300 amperes for 15 seconds Remove the load Wait 15 seconds and then take the reading The OCV reading is accurate 10 A battery with a state of charge of 65 or greater is marginally charged enough to be returned to service However if the vehicle will be used in slow traffic or short drive times or in very cold or very hot conditions the battery should be at least 90 of Tull charge before returning to service Automatic Battery Chargers Advancements in battery charging technology now combine diagnostics and charging control systems that monitor and automatically regulate the charging process These controls maximize the chargers output based on the battery status while protecting the battery from overcharge This means you can use chargers with the highest output ratings so long as the charger makes the necessary adjustments as the battery approaches full charge Automatic battery chargers such as the Midtronics GR1 Associated Intell Matic Pro or the Cristie PDO can return a good but discharged battery to at least 85 state of charge in 20 to 40 minutes Manual Battery Chargers Non automatic battery chargers do not offer the self limiting features o
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