REAR AUXILIARY SPRING NOISE REPLACE SPRING STOPS

SUBJECT: REAR AUXILIARY SPRING NOISE (REPLACE SPRING STOPS WITH NEW STYLE STOP)

VEHICLES AFFECTED: 1988-90 C2,C3,K3 10,000 LBS. GVWR OR LESS W/REAR AUXILIARY SPRINGS

THIS BULLETIN IS BEING REVISED TO RESTRICT INVOLVED VEHICLES TO 10,000 LB. GVWR OR LESS.

*Some 1988 - 1990 C2, C3 and K3 trucks, 10,000 lbs. GVWR or less, equipped with auxiliary rear springs may experience a noise from the rear spring area. This noise may be described as a slap sound and is caused when the auxiliary, or second stage springs, contact the spring stops.

*This condition can be repaired by replacing the existing spring stops and insulators with revised one piece spring stops. These revised spring stops feature softer insulators which are moulded directly to the metal stop, as shown in Figure 1.

INVOLVED VEHICLES:

All 1988-90 C2, C3 and K3 vehicles, 10,000 lbs. or less, equipped with auxiliary rear springs and built prior to the VIN breakpoints listed below:

Ft. Wayne (Z) - No vehicles involved

Oshawa (1) - GMC L1551873 - CHEVROLET L1229962

Pontiac E (E) - GMC LE539501 - CHEVROLET LE219188

SERVICE PARTS INFORMATION

Part Number Description Quantity ----------- ----------- -------- 15654886 Rear Spring Stop, Front 2 15654887 Rear Spring Stop, Rear 2

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.