Defect, Vehicles Involved, Owner & Dealer Information
DEFECT INVOLVEDGeneral Motors has determined that a defect which relates to motor vehicle safety exists in certain 1984 through 1988 Chevrolet vehicles equipped with Cruise Control (RPO K34) on certain gasoline and diesel engines. A small nylon bushing in the cruise control servo bail (bracket) may slip out of place. This will not affect the operation of the cruise control, but it may cause intermittent increases in engine speed or dieseling (engine run-on with ignition off).
If the vehicle is not serviced and the nylon bushing remains out of place, the servo rod assembly could wear through the bail. If the rod wears through the bail, it may catch on other engine components and possibly result in a stuck throttle. Although the vehicle can still be stopped with the service brake, an unexpected loss of accelerator control could result in vehicle crash.
To prevent this condition from occurring, Dealers are to install a Bushing Kit on the Cruise Control Servo Bail. The cruise control servo assembly is not authorized as a replacement to correct for a missing or out of place bushing. Also, if other repairs are needed to the cruise control system, and the vehicle is out of warranty, the repairs would be at owner's expense.
VEHICLES INVOLVED
Involved are certain 1984-1987 Chevrolet vehicles equipped with Cruise Control (RPO K34) and engines (5.7L Diesel VIN code "N" or 5.0L Gas VIN code "Y") as listed below, and certain 1988 Chevrolet vehicles equipped with cruise Control (RPO K34) and 5.OL engine (VIN code "Y") within the following breakpoints listed below:
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 to our 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.
PARTS INFORMATION
Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).
Part Number Description Quantity/Vehicle
25111444 Bushing Kit - Cruise Control 1