K 1500 Suburban 4WD V8-393 6.5L DSL Turbo (1994)
Brake Drum: All Technical Service Bulletins
Brakes - Rear Axle Grinding Noise, Replace Drum
Group Ref.: Drive Axle
Bulletin No.: 364301
Date: February, 1994
SUBJECT:
REAR AXLE GRINDING NOISE (REPLACE DRUM)
MODELS:
1994 CHEVROLET AND GMC SUBURBANS AND YUKONS/BLAZERS WITH 8.5 INCH REAR AXLES
CONDITION:
Some owners may comment on a grinding noise emanating at the rear of the vehicle while turning sharply to the left or to the right.
CAUSE:
An interference condition may exist on these models between the brake drum and the backing plate. Under some circumstances, this interference
condition may result in a grinding noise. This condition was corrected in production in November of 1993.
Note:
Vehicles with axles manufactured after Julian Date 305 should not exhibit this condition. The Julian date can be found on the rear axle housing.
CORRECTION:
For vehicles exhibiting this condition, check for an interference condition between the backing plate and the drum on each rear wheel. Witness marks on
the brake drum or backing plate may indicate that an interference condition exists. If an interference condition does exist, replace the subject brake drum
following the procedure below.
SERVICE PROCEDURE:
1.
Raise the vehicle and support with safety stands.
2.
Remove the tire and wheel assembly.
3.
Remove the drum.
4.
Install a new drum.
5.
Reinstall the wheel and tire assembly. Torque the nuts to 160 N.m (120 lbs. ft.)
SERVICE PARTS INFORMATION
P/N
Description
QTY
15693462
Brake Drum, Yukon/Blazer
As Required
15693465
Brake Drum, 2-Wheel
As Required
Drive Suburban
15693466
Brake Drum, 4-Wheel
As Required
Drive Suburban
Parts are currently available from GMSPO.
WARRANTY INFORMATION
For vehicles repaired under warranty, use:
Labor Op
Description
Labor Time
H0200
Right Drum R&R
Use Published
H0201
Left Drum R&R
Labor Operation
H0207
Both Drums R&R
Time
