Defect & Vehicles Involved, Owner Notification, Campaign Responsibility & Parts Information

DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1988 C/K 10-30 series trucks equipped with cruise control (RPO K34). The cruise control cable lock mechanism may self-disengage. When this occurs, vibrations can cause the cable to readjust by itself resulting in erratic cruise control operation or the throttle not returning to idle. In this event, engine speed may not decrease to a level anticipated by the operator. Although the vehicle can still be stopped with the service brake, loss of accelerator control could result in a vehicle crash, without prior warning.
To prevent this condition from occurring it will be necesssary to install a clamp around the lock tab of the cruise control cable on all involved vehicles.


VEHICLES INVOLVED

Involved are certain 1988 C/K 10-30 series trucks built within the following VIN breakpoints:

PLANT FROM THROUGH

Pontiac East JE100001 JE104942
Fort Wayne JZ100570 JZ106795
Oshawa J1100023 J1111540

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 the 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 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 correction 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. with no special instruction code, but on an advise code (2).


PART NUMBER DESCRIPTION QUANTITY

22537006 or Hose Clamp 1
equivalent *


* A stainless steel worm gear type clamp capable of achieving a diameter of 1.25" with a band width of approximately .25" to .5".