RATTLE/CHUCKING NOISE IN REAR SEAT

MODELS: 1982-86 C/K AND 1987 R/V CREW CABS

Some 1982-86 C K and 1987 R/V crew cab models may experience a rattling (chucking) noise from the rear seat back. This condition is caused by insufficient drag, friction between the seat back frame and seat assembly. To repair this condition, a new seat pivot bolt, P/N 15569026, and wave washer, P/N 335367, have been released. These new parts should be installed on both sides of the seat as shown in Figure No. 1.

These parts were incorporated into production beginning with the following VIN breakpoints:

Chevrolet HS129971 GMC HS509287

Labor Op T 7360 should be used when performing this repair. The repair time is 0.7 hrs.

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.