Guys, I have a 02 ext. cab and I have a chripping noise that sounds like it coming from under the dash around the glove box area. It driving me crazy! I have sprayed everything I can get to but it's still there. Get this, it does not do it when I'am on the gas but when I let up it starts again. Maybe something about vacuum. I disconnected the fan motor but it still done it. Sounds like a little bird under there. HELP. Before I go crazy.