Blazer Forum - Chevy Blazer Forums - Thumping noise from rear

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ajfetterman

11-05-2018 09:34 AM

Thumping noise from rear

So I have noticed a thumping or pumping type noise randomly coming from the rear.

It it is not consistent with anything and seems to happen after the key is off and out too.

I was was thinking maybe the vapor canister? Can anyone confirm or deny that is what it is? No CEL and runs fine.

ajfetterman

11-05-2018 07:44 PM

And now I have a CEL after driving a few days? Any ideas? I will scan it for the code but I was hoping this sounded familiar to someone.

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