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Defects & Vehicles Involved, Owner Notification & Dealer Campaign Information

DEFECT INVOLVED

General Motors has determined that certain 1988 Chevrolet C/K 20 series pickup trucks equipped with 6.2 liter diesel engines and THM 700-R4 transmissions fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 105 "Hydraulic Brake Systems". The rear wheel anti-lock (RWAL) brake feature on these trucks could unintentionally become disabled by an electrical
DEFECT INVOLVED malfunction. The front and rear brakes will continue to work properly, but the brake warning indicator lamp on the instrument panel will fail to light and inform the driver of the RWAL disablement. Failure to light the brake warning indicator lamp is a non-conformance to FMVSS 105 requirements.

To prevent the possibility of this condition occurring it will be necessary to install a jumper wire harness between the transmission connection and the engine wire harness on all involved vehicles.


VEHICLES INVOLVED

Involved are certain 1988 Chevrolet C/K 20 Series Pickup Trucks built before early October, 1987 and equipped with 6.2L diesel engines (LH6) and THM 700-R4 automatic transmissions (MD8) built within the following VIN breakpoints:


PLANT FROM THROUGH

Pontiac East JE100027 JE144158

Fort Wayne JZ117957 JZ162402

Oshawa J1143084 J1171232


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.


OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of owner letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY

Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.

Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future, you should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.

Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer, and arrangements made to make the required correction according to instructions contained in this bulletin.

This bulletin is notice to you that the new motor vehicles included in this campaign may not comply with the standard identified above. Under Section 108 of the National Traffic and Motor Vehicle Safety Act, it is illegal for a dealer to sell a new motor vehicle which the dealer knows does not comply with an applicable Federal Motor Vehicle Safety Standard. As a consequence, if you sell any of these motor vehicles without first performing the campaign correction, your dealership may be subject to a civil penalty up to $1,000 for each such sale.
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