1. TechnicalBulletin Bulletin No PRO 10 01 Effective Date 11 17 81 Cancels N A Page 1 of 1 Subject CRUISE CONTROL RETROFIT G M C COACH MODEL 4104 Please refer to catalog page 10 A 3 and delete G M C Model 4104 from the application list We have found that a cruise control system installed on a G M C Model 4104 will not function properly This is due to the type of engine governor used and the electrical system polarity on this vehicle The steps required to correct the problems are not economically feasible