Purchased a 2004 Chevy Colorado crew cab last year and in that time i've had to have my front speakers replaced , tried to get the rear speakers replaced but even though the static and noise is very odvious the dealership said Checy has put a freeze on replacing the speakers in the colorados, theres also a loud bumping noise that comes from the rear of the truck whenever people are in the rear cab which sounds like something is loose. Truck also has a squeeling noise everytime you make a left handed turn. Anyone else with these problems?