C 1500 Truck 2WD V8-5.3L VIN T (1999)
Brake Rotor/Disc: Customer Interest
Brakes - Rear Brake Clunk Noise or Vibration/Pulsation
File In Section: 5 - Brakes
Bulletin No.: 86-50-22
Date: October, 1998
Subject:
Rear Brake Clunk Noise or Vibration/Pulsation (Install New Rear Brake Rotors)
Models:
1999 Chevrolet Silverado and GMC Sierra 15 Series Models with RPO JC5
Condition
Some owners may comment about a "clunk" or "thump" noise coming from the rear of the vehicle, or a vibration/pulsation of the vehicle when the
brakes are applied. The "clunk" or "thump" noise may be one per revolution of the wheel. The vibration or pulsation may or may not be felt at the brake
pedal.
Cause
Condition may be caused by the brake rotors micro finish or disc thickness not to specification.
Correction
Replace the rear brake rotors on both sides (left and right) with new rotors that are within specification. Use the part number listed below. Refer to the
1999 Silverado and Sierra Service Information for rotor replacement procedures.
Parts Information
P/N
Description
Qty
15712800*
Rotor Assembly
2
Parts are currently available from GMSPO.
*ATTENTION DEALERS:
PLEASE REFERENCE GM SERVICE PARTS OPERATION (GMSPO) INFORMATION BULLETIN # 98-307 DATED OCTOBER 20, 1998 FOR
SPO SPECIAL RETURN PROCEDURE.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
H0137
Rotor Assembly
Use published
R&R or Replace
labor operation
time
