FRONT BRAKE NOISE REVISED BRAKE PAD W/JN3

Model and Year: 1988 C/K 10

Some 1988 C/K 10 series trucks with JN3 power brakes (fourth digit of VIN is "D") may experience a high pitched brake noise under light to moderate brake applications. A revised brake pad with a new lining has been released to production after the following VIN breakpoints to reduce the noise.

ASSEMBLY PLANT VIN BREAKPOINTS -------------- ---------------

Ft. Wayne JZ256482

Oshawa J1256582

Pontiac JE182877

Option Part Model Code Year Number ----- ------ ---- ------ C/K 10 JN3 1988 12321447 Under 6000 GVWR Power Brakes

The revised brake pads are currently available through GMSPO.

Use existing labor operations and times.

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.