K 2500 Truck 4WD V8-379 6.2L DSL (1988)
Suspension Strut / Shock Absorber: All Technical Service Bulletins
Campaign - Bilstein Front Shock Absorber Durability
NUMBER:
88-C-07
GROUP:
3C - Front Suspension
DATE:
January, 1988
SUBJECT:
OFF-ROAD BILSTEIN FRONT SHOCK ABSORBER DURABILITY
MODELS:
1988 K 15 WITH RPO Z71
General Motors has determined that some 1988 GMC K 15 Trucks equipped with off-road Bilstein front shock absorbers (RPO Z71) may have an
incorrect valve in the shock absorbers. During off-road driving, the incorrect valving causes increased loading into the shock valve which may result in
premature valve wear. To prevent the possibility of this condition occurring, it will be necessary to replace the front shock absorbers on all involved
vehicles.
VEHICLES INVOLVED
Involved are certain 1988 GMC K 15 Trucks equipped with off-road Bilstein front shock absorbers (RPO Z71) within the following VIN breakpoints:
MODEL
YEAR
PLANT
FROM
THROUGH
1988
Oshawa
J1512142
J1520382
Pontiac East JE504590
JE509620
Fort Wayne
JZ504529
JZ510971
The specific vehicles involved in this campaign have been identified by Vehicle Identification Number Computer Listings. These listings are furnished
to all involved dealers with the campaign 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 vehicles 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 ensure 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. If no owner's name and address were available to GMC Truck Division, at the time of
campaign initiation, the dealer will determine the owner's name and address from the dealership sales records. Please provide this information directly on
the second copy of the listing next to the applicable VIN so that our records may be updated and the appropriate notification mailed to the owner. This
second copy should then be submitted to the address listed below in the previously supplied yellow campaign envelopes.
GMC Truck Division General Motors Corporation 101 Union Street Plymouth, Michigan 48170
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by GMC Truck Division (see copy of Owner Letter included with this bulletin). A listing of
owner names and addresses has been furnished to the involved dealers to enable dealers to follow up with owners involved in this campaign. This listing
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 this campaign.
SERVICE PROCEDURE
Front shock absorber removal and installation procedure is given in Section 3C-1, "Front Suspension and Axle" of the 1988 Light Duty C/K Models
Service Manual Supplement, X-8845.
PARTS INFORMATION
Parts are to he obtained from General Motors Service Parts Operation (GMSPO). To ensure that 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 order under an advise code (2).
Part
Number
Description
Quantity
22064020
Shock Absorber
2
WARRANTY INFORMATION