If the noise is present when the car is not moving, It would seem it must be the fuel pump, which is located in the gas tank. There isn't anything else at the back of the car that could make a sound w/out the car moving.
Testimonial: "thanks for the good info!"
Sounds like the exhast pipe is hiting the frame or trunk flore
theres nothing that moves when at stand still
Testimonial: "Thanks for the info. This even happens right after the car is turned off. Thanks again!"
Don't have a solution, but the same problem. It sounds like someone is knocking on the trunk of my 2007 impala. The first time i brushed it off and the second time I though it was the UPS guy knocking hard. Now, I know its my car, I was the only one driving on the street. I'm confused it doesn't happen often, but it doesn't happen when I'm with anyone. HELP
I have this problem also! It scared me the first time it happened i thought there was an animal in my trunk or something! It happens to me alot after i fill my tank up. When i took it in they told me it wsa my spare tire that was loose. But it still happens. Shows how much they know :(
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