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All Technical Service Bulletins: > < Brakes - Noise From Front
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Brake Pad: Customer Interest
Brakes - High Pitched Noise

Number:

88-361-5

Section:

5

Date:

NOV., 1988

Subject:

FRONT BRAKE NOISE

Model and Year:

1988 C/K 10

TO:

ALL CHEVROLET DEALERS

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.

All Technical Service Bulletins: > < Brakes - Noise From Front