Drivetrain - Squawk/Bump/Clunk When Stopping: Overview
Bulletin No.: 01-04-17-004BDate: January 05, 2005
TECHNICAL
Subject:
Clunk, Bump or Squawk when Vehicle Comes to Complete Stop or Accelerating from Complete Stop (Replace Rear Drive Shaft Nickel-Plated Slip Yoke)
Models:
2003-2005 Hummer H2
with Four Wheel Drive (4WD) or All Wheel Drive (AWD) and One-Piece Propeller Shaft ONLY
Supercede:
This bulletin is being revised to add HUMMER H2 to the Models section. Please discard Corporate Bulletin Number 01-04-17-004A (Section 04 - Driveline/Axle).
Condition
Some customers may comment on a clunk, bump or squawk noise when the vehicle comes to a stop or when accelerating from a complete stop.
Cause
A slip/stick condition between the transfer case output shaft and the driveshaft slip yoke may cause this condition.
Diagnostic Tips
There are several resources in the electronic Service Information System which can provide the technician with information on diagnosis and repair of clunk conditions, and fix the customer's vehicle right the first time without unnecessary parts replacement. Some of the documents available in SI include:
^ Launch Shudder/Vibration on Acceleration (Replace Propeller Shaft and Install a New Pinion Flange/Seal), Bulletin # 02-04-17-001
^ Information on 2-3 Upshift or 3-2 Downshift Clunk Noise, Bulletin # 01-07-30-042
^ Driveline Clunk When Stopping (Reprogram Powertrain Control Module (PCM), Bulletin # 03-07-30-028
Parts Information
For vehicles repaired under warranty, use the table.
Disclaimer