Defect and Vehicles Involved
DEFECT INVOLVEDGeneral Motors has determined that a defect which relates to motor vehicle safety exists in certain 1988-93 C/K model trucks equipped with certain combinations of 5.0L, 5.7L & 7.4L engines and 4L60, 4L60-E & 3L80 automatic transmissions.
The transmission fluid in these vehicles, as a result of unanticipated heat generation in the transmission, may be forced out of the vent tube. The heat generation is usually the result of trailering heavy loads at high speeds or high-load/off-road use. The vented transmission fluid may come in contact with the catalytic converter and ignition of the transmission fluid may result.
To prevent the possibility of this condition occurring, dealers are to install a longer transmission vent hose routed to the left side of the vehicle.
VEHICLES INVOLVED
GMC Truck Vin Breakpoint
Chevrolet Truck Vin Breakpoint
Involved are certain 1988-93 C/K model trucks equipped with 5.0L, 5.7L & 7.4L engines and 4L60, 4L60-E & 3L80 automatic transmissions built within the following VIN breakpoints:
1988-93 C/K 10, 20 model trucks equipped with 5.7L (L05) engines and 4L60/4L60-E (MD8/M30) automatic transmission
1988-93 C/K 20 model trucks equipped with 5.0L (L03) engines and 4L60/4L60-E (MD8/M30) automatic-transmission
1988-90 C/K 20, 30 equipped with 5.7L (L05) or 7.4L (L19) engines and 3L80 (M40) automatic transmission
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.