Differential - Growl Noise

89Chevy18

Number: 8-416-4C
Section: 4C
Date: May, 1989
Subject: FRONT AXLE GROWL NOISE


Model and Year: 1983-88 T1 TRUCKS

Figure 1:

TO ALL CHEVROLET DEALERS:


Beginning with start of production 1989, the material in the thrust washers in the front axle tube of T Model Trucks was changed to reduce thrust washer wear. The washers involved are # 7, # 20 and # 24 as shown in Figure # 1.

When worn, the metal in the washer will be smeared from slipping. Number 24 may also be dished.

Whenever it is determined that one washer is worn, all three thrust washers should be replaced with kit P/N 26018721, that contains all three thrust washers.

Parts are currently available from GMSPO.

The kit should be used to resolve T Model front axle growl noise conditions.

For vehicles under warranty, use:

Labor Operations: F2115
Labor Time: 1.4 Hrs (plus applicable "adds")