Defect, Vehicles, Owner, Dealer and Service Information

DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1988 C/K 10-20 model trucks built at Ft. Wayne. One or both of the outer tie rod nuts may be loose and not crimped. A loss of one or both of these nuts could lead to the outer tie rod(s) disengaging from the steering knuckle resulting in a possible loss of steering control which could lead to a vehicle crash without prior warning.
DEFECT INVOLVED (CONT'D)

To prevent this condition from occurring it will be necessary to inspect the outer tie rod nuts for crimping on all involved vehicles. If a non-crimped nut is found, the tie rod and knuckle are to be replaced and the toe-in set.


VEHICLES INVOLVED

Involved are certain 1988 C/K 10-20 model trucks built at Ft. Wayne within the following VIN breakpoints:

MODEL ASSEMBLY
YEAR PLANT FROM THROUGH

1988 Ft. Wayne JZ100903 JZ103781

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

PART
NUMBER DESCRIPTION QUANTITY

11514337 Cotter Pin - Ball Joint 2 (Each side
to Knuckle as required)
26000150 Tie Rod Asm-Outer (Left & Right) 1 (Each side
as required)
1052535 Brake Fluid (16 oz) 1

C10
T5589409 Steering Knuckle Asm-L.H. 1
15589410 Steering Knuckle Asm-R.H. 1
3965092 Seal - Front Wheel 1 (Each side

as required)

C20
15589433 Steering Knuckle Asm-L.H. 1
15589434 Steering Knuckle Asm-R.H. 1
3965092 Seal - Front Wheel 1 (Each side

as required)

K10-20
15608671 Steering Knuckle Asm-L.H. 1
15608672 Steering Knuckle Asm-R.H. 1