G 30 Van V8-393 6.5L DSL VIN P (1995)
Brake Pad: Customer Interest
Front Disc Brakes - High Pitched Squeak
File In Section: 5 - Brakes
Bulletin No: 56-50-06
Date: November, 1995
Subject:
Front Disc Brake Squeaks/Squeals (Install New Front Disc Pad)
Models:
1990-95 Chevrolet G Vans - Built Before VIN SF156737
1990-95 GMC Truck G Vans - Built Before VIN SF522888
with RPO's JB5 or JB7 Brakes
Condition
Some customers may experience a high pitched squeak/squeal coming from the front disc pads under light or moderate brake applications.
Cause
The above characteristic is commonly due to component sensitivity to moisture and contaminates.
Correction
A revised front disc pad with a new insulator material DM7642 (Wolverine) has been released. The new insulator is permanently attached to the metal
portion opposite side of the brake pad.
It is important to understand that the new material may not totally eliminate brake noise. It may however reduce the noises to a level which is more
acceptable.
Because of strict design requirements, the disc brake pads on vehicles used today consist of a semimetallic-resin mixture which may cause an occasional
or intermittent high pitched squeak/squeal when brakes are light or moderately applied. Some brake noise may be characteristic. If the Dealer service
department has demonstrated that the condition is a normal characteristic, the customer should be assured that this is normal and no repairs should be
attempted.
Service Procedure
Reference the Brake Pad section for proper replacement procedures.
Important:
If the brake rotors need to be refinished, follow the procedures located in the Service Manual Reference Section 5B1.
Parts Information
P/N
Description
Qty
12370017
Front Disc Pads (JB5)
2
12370019
Front Disc Pads (JB7)
2
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Labor Time
H0042
Use published labor operation time.