FRONT BRAKE NOISE OR SQUEAL INSTALL NOISE INSULATED PADS

MODELS: 1979-1987 LIGHT DUTY TRUCK MODELS

Some 1979-1987 light duty truck models may experience a high pitched squeal coming from the front of the vehicle under light to moderate brake applications. Revised noise insulated brake pads (called SAS II) with an insulator permanently attached to the metal portion of the brake pads are now available to help reduce brake squeal. These brake pads are available for the light duty trucks listed below.

OPTION PART MODEL CODE YEAR NUMBER ----- ------ ---- ------ M Van Manual Brakes JB1 1985-87 12321436 Power Brakes JB3 1985-87 12321435

S/T JB1,JM5, 1982-87 12321426 All JM7

R/V, G-1,2 Under JB1 1983-87 12321434 8,000 GVW and Manual Brakes

R/V-1, 2 Under JB3,JD3,JB5,JD5 1984-87 12321435 8,000 GVW and Power JB6,JD6 Brakes

G-1,2 Under 8,600 JB3,JB5,JD5 1984-87 12321435 GVW and Power Brakes

R/V-2 8,600 GVW JB7,JD7 1979-87 12321437 and Power Brakes

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.