Defect Involved

In October, 1982, General Motors notified owners that a defect existed on some 1982 C,K10 and G10-20 Series Light Duty Trucks equipped with 8.5" Eaton locking differentials (RPO G80). In that notification, owners were advised that on these trucks, the differential lock screw or differential pinion shaft could come loose and damage the rotating parts of the rear axle.

The National Highway Traffic Safety Administration (NHTSA) has advised General Motors that this defect "could result in a loss of vehicle control and an accident". Accordingly, the NHTSA has requested General Motors to initiate a safety recall to notify the owners whose vehicles have not yet been corrected "of the problem and its consequences". Based on this request, General Motors has reconsidered this matter and has determined that a defect which relates to motor vehicle safety exists on some 1982 C,K10 and G10-20 Series Light Duty Trucks equipped with 8.5"
Eaton locking differentials (RPO G80).

On these trucks, the differential lock screw or differential pinion shaft could come loose. If this were to occur while the vehicle is in motion, it could result in "a loss of vehicle control and an accident".

To prevent the possibility of this condition occurring, Chevrolet Dealers are to replace the differential lock screw on these vehicles in accordance with the Service Procedure in this bulletin.


VEHICLES INVOLVED

Involved are certain 1982 C, K10 and G10-20 Series Light Duty Chevrolet Trucks equipped with RPO G80 (8.5") Eaton locking differentials assembled at the following assembly plants within these parameters:

Plant From Through

St. Louis Start of Production CS147194
Janesville Start of Production CJ133666
Lordstown Start of Production C7133044
Flint #1 Start of Production CF336939
Flint #2 Start of Production CF136323
Oshawa Start of Production C1172718
Scarborough Start of Production C4135156
Fremont Start of Production CZ104322

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 was not shipped any involved vehicles.


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, 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.