I realize that some of you mentioned some "tapping" noise in your cars. However mine is alittle different, mine is a clicking noise.. it almost sounds like the trunk opens but when i check it it is closed. It is not anoying it has happened about twice sinceI have gotten my car and now my car has 300 miles and is a sedan SS 2006. Is this the sound you guys are experiencing or is this something else?
Thanks

 

yup same noise

 

Just drive the car off of a giant cliff. The impact should hopefully solve the clicking problem.

NOTE: Other problems may arise

 

It's the same sound. It's your gas tank checking fuel pressure to make sure there are no leaks. Many GM vehicles do this. The car is fine.