Subject: | Underbody Pop or Clunk Type Noise While Turning or Driving on Uneven Road Surfaces (Install Body Mount Insulator) |
Models: | 2004-2008 Cadillac Escalade, Escalade ESV, Escalade EXT |
2004-2008 Chevrolet Avalanche, Suburban, Tahoe |
2004-2008 Chevrolet Silverado (Classic), Silverado |
2004-2008 GMC Yukon, Yukon XL, Yukon Denali, Yukon Denali XL |
2004-2008 GMC Sierra (Classic), Sierra Denali (Classic), Sierra, Sierra Denali |
This bulletin is being revised to update the model years and include diagnosis information. Warranty information has also been updated. Please discard Corporate Bulletin Number 06-08-61-003C (Section 08 - Body and Accessories).
Some customers may comment on a pop or clunk type noise while turning or driving on uneven road surfaces. This noise can be heard and/or felt at either the driver's or front passenger floor pan area.
Under certain conditions, normal movement between the frame and the #1, #2 or #3 body mounts may cause this noise to occur.
Install an insulator at the suspect mount(s). The insulator should be installed between the upper portion of the body mount and the frame bracket. The #1 mount is the mount located just under the A-pillar. The #2 mount is the mount located just under the B-pillar. The #3 mount is the mount located just under the C-pillar. Use the procedure listed below.
2.1. | Remove the nut from the park brake equalizer. |
2.2. | Remove the intermediate cable from the equalizer. |
2.3. | Depress the retaining tabs that secure the park brake cable to the frame. |
2.4. | Pull slightly on the cable from the mounting area in order to provide slack for body movement without binding the cable. |
Caution: When you remove the body mount, do NOT separate the frame from the body more than is necessary. Possible personal injury and damage to multiple parts may result.
8.1. | Clean the bolt threads of all the original thread locking compound. |
8.2. | Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry. |
8.3. | Apply Threadlocker, GM P/N 89021297 (In Canada, use P/N 10953488). |
Tighten
For 2003, 2004 and 2005 model year, tighten the bolts to 85 N·m (63 lb ft).
Tighten
For 2006-2008 model year, tighten the bolts to 100 N·m (74 lb ft).
Part Number | Description |
---|---|
15899719 | Insulator, Body |
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
---|---|---|
E9438* | Install Insulator to Body Mount (one side) | 1.2 hrs** |
Add | To Install Insulator to Additional Body Mount (opposite side) | 0.6 hr |
Add | To Install Insulator to Additional Body Mount (same side) | 0.2 hr |
* This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide. ** This time includes diagnosis time. |