GM Service Manual Online
For 1990-2009 cars only

Rattle Noise From Front of Engine - keywords 07 08 3.6 chain engine front gasket noise rattle tensioner timing

Subject:Rattle Noise From Front of Engine

Models:2007-2008 Cadillac CTS, SRX, STS
2008 Buick Enclave
2007-2008 Chevrolet Equinox, Malibu
2007-2008 Pontiac G6, Torrent
2007-2008 GMC Acadia
2007-2008 Saturn Aura, Outlook, Vue
with LY7 or LLT 3.6L HFV6 engine



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some customers may comment of a rattle noise from the front of the engine.

Recommendation/Instructions:

The cause may be a timing chain tensioner gasket incorrectly installed. Check for the timing chain tensioner gasket folded or mispositioned and replace as necessary.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.