- Jan 23, 2002
- Forked River, New Jersey
I noticed a high pitch sound coming from my 2002 Z71. The sound is somewhere under the truck. As I look for the sound orgin, it is more noticible in the rear. The sound I hear comes when my truck is running at idle. I noticed the sound yesterday when moving out of a parking space while my window was open and the radio off parked next to another vehicle. Once I start driving I cant hear the sound. What is it Please advise.