For 1990-2009 cars only
Driveline Clunk Heard/Felt When Applying or Releasing Throttle Quickly
| Subject: | ADVANCE SI RESOLUTION -- Driveline Clunk Heard/Felt When Applying or Releasing Throttle Quickly |
| Models: | 2005 Buick Rainier |
| 2005 Chevrolet TrailBlazer EXT |
| 2005 GMC Envoy Models |
| with 5.3L V8 Engine (VINs M, P -- RPOs LH6, LM4) |
| and Four Wheel Drive (4WD) or All Wheel Drive (AWD) |
This bulletin is being revised to add additional repair information. Please discard Corporate Bulletin Number 04-06-04-072A (Section 06 -- Engine/Propulsion System).
Condition
Some customers may comment on a clunk noise heard and/or felt in the driveline while applying or releasing the throttle quickly.
Cause
The control system software may not totally be effective in controlling torque reversals through the driveline. This heightens driveline sensitivity to tip-in/tip-out clunk.
Correction
Refer to Corporate Bulletin Number 05-06-04-017 for repair information.
Dealer Action
Contact customers that were told they would be notified when a repair became available.
