popping noise when backing up or coming to a full stop and then accelerating
maybe these can help…
Some owners of a 2007-08 Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, or Yukon may experience a pop or tick type noise from the left front dash area when driving over bumps. The noise may occurr when backing out of a parking spot or going over small speed bumps in a parking lot. The noise is worse when the vehicle is cold and may go away at higher temperatures.
The condition may be caused by a loose spot weld that attaches the L-bracket from the left inner fender panel to the front bulkhead (fig. 17).
Add three bolts with nuts through existing holes in the left fender bracket and the fender inner panel (fig. 18). The fender bracket is spot welded to the inner panel and attaches to the front-of-dash with two nuts and studs through the dash panel.
Bulletin No.: 12-02-32-003
Date: August 09, 2012
Subject: -Pop, Click or Clunk Noise Coming from Steering Gear at Low Speeds over Bumps Click or Clunk Felt through Steering Column to Steering Wheel
Models:
2007-2013 Cadillac Escalade Models
2007-2013 Chevrolet Avalanche, Silverado, Tahoe
2007-2013 GMC Sierra, Yukon Models
Excluding Hybrids
Condition
Some customers may comment on a pop, click or clunk noise at low speeds when going over bumps and can be felt through the column to steering wheel.
Cause
This condition may be caused by a worn steering gear bushing.
Correction
Replace the steering gear bushing and inner tie rod boot clamp. DO NOT REPLACE the steering gear for this condition.