Thunking sound in rear area
Senior Member
Joined: 05-23-2006
Posts: 1,082
From: Chandler, AZ
Sounds like it's just the gas sloshing around in the tank! I noticed something like that when we first got our HHR back in August '05. We never did anything about it, and after a while you just don't hear it anymore.(Just like when my Wife nags me!!)
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