K 1500 Yukon Denali AWD V8-6.0L VIN U (2002)
Parking Brake Shoe: Customer Interest
Brakes - Scraping Noises From Rear of Vehicle
File In Section: 05 - Brakes
Bulletin No.: 02-05-26-002A
Date: February, 2003
TECHNICAL
Subject:
Scraping Noise From Rear Of Vehicle
(Replace Parking Brake Shoe Kit and Clean Drum In Hat Rotor)
Models:
2002-2003 Cadillac Escalade, Escalade EXT
1999-2003 Chevrolet Silverado 1500 Series Pickups
2000-2003 Chevrolet Suburban, Tahoe 1500 Series Models
2002-2003 Chevrolet Avalanche 1500 Series Models
1999-2003 GMC Sierra 1500 Series Pickups
2000-2003 GMC Yukon, Yukon XL 1500 Series Models
This bulletin is being revised to add Suburban and Yukon XL models. Please discard Corporate Bulletin Number 02-05-26-002 (Section 05 - Brakes).
Condition
Some customers may comment on a scraping noise from the rear of the vehicle while driving. The noise may be intermittent.
Cause
Condition may due to the parking brake shoe contacting the drum in hat rotor without the parking brake being applied, causing premature wear on the
shoe lining.
Correction
Replace the parking brake shoe and install a new designed spring clip retainer. Follow the service procedure below to correct this condition.
1.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Information (SI
Document ID # 639546).
2.
Remove the tire and the wheel. Refer to Tire and Wheel Removal and Installation in the Tires and Wheels sub-section of the Service Information
(SI Document ID # 656965).
3.
Relieve the tension on the park brake cables by loosening the nut at the equalizer.
4.
Mark the relationship of the rotor to the hub.
5.
Remove the brake caliper bracket mounting bolts.
Notice:
Support the brake caliper with heavy mechanic's wire, or equivalent, whenever it is separated from it's mount and the hydraulic flexible brake hose is
still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause
damage to the brake hose and in turn may cause a brake fluid leak.
6.
Remove the brake caliper and brake caliper bracket as an assembly and support with heavy mechanic's wire or equivalent. DO NOT disconnect the
hydraulic brake flexible hose from the caliper.
7.
Remove the rotor retaining push nuts from the wheel studs (if applicable).
Notice:
DO NOT use a hammer to remove the rotor from the hub; it may cause damage to the rotor.
Important:
The rotor may not be easily removed from the hub due to a rust build up on the outside edge of the drum and hat portion of the rotor.
