Sliding Rear Window - Leaks Water and Rattles

91chevy27

Number: 91-455-10

Section: 10

Date: NOV. 1991

Corporate Bulletin No.: 161508

ASE No.: B1


Subject: SLIDING REAR WINDOW RATTLES AND LEAKS


Model and Year: 1988-91 C/K TRUCKS


Some owners of 1988-1991 C/K trucks built with a sliding rear window (RPO A28) may comment about water leaks and wind noise from the lower glass run channel and glass rattling in the upper glass run channel.

To correct, it is necessary to replace the lower and the upper glass run channels. The new lower glass run channel has nine off-setting drain holes and a felt-like material has been added to the upper channels.


SERVICE PROCEDURE:

1. Remove lower glass run channel.

2. Remove upper glass run channels.

Note: Lubricate the glass run channels with a multipurpose lubricant before installing.

3. Install lower glass run channel.

4. Install upper glass run channels.

SERVICE PARTS INFORMATION:

Part Number Description Quantity

15691079 Upper glass run channel 2
15691080 Lower glass run channel 1

Parts are currently available from GMSPO.

WARRANTY INFORMATION:

For vehicles repaired under warranty use:

Labor Operation Description

C0670 Glass, Back Sliding Window
-Reseal Right

C0671 Glass, Back Sliding Window
-Reseal Left

Use applicable labor time guide for labor hours.