Defect, Vehicles, Owner, Dealer and Parts Information

DEFECT INVOLVED

General Motors has determined that certain 1988 K 10-30 series light duty model trucks were built with incorrect front shock absorber upper and lower nuts. These nuts could loosen, resulting in some noise and if ignored or undetected by the operator, eventual shock absorber detachment at the upper mount will occur. A detached shock absorber could come in contact with the front brake hose. This contact could result in a leak in the hose with a resulting loss of the front brakes. A reduction of braking ability at a time when minimum stopping distance is required could result in a vehicle crash without prior warning.
DEFECT INVOLVED (CONT'D)

To prevent this condition from occurring it will be necessary to replace the existing free spinning nuts with prevailing torque nuts on all involved vehicles.


VEHICLES INVOLVED

Involved are certain 1988 K 10-30 series trucks built at Oshawa and Pontiac within the following VIN breakpoints:

PLANT FRONT THROUGH

Pontiac JE100007 JE100809

Oshawa J1100016 J1103659

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 modification are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure that these parts are 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

11500949 Bolt - 12 mm x 1.75 x 80 mm 2
11513580 Bolt - 12 mm x 1.75 x 95 mm 2
15531205 Washer 4
11500756 Nut - Prevailing Torque 4