My 2000 GMC Sonoma has been experiencing some problems with the ABS light and Brake light coming on and staying on at unpredictable times. I have already heard that i need to take it to a shop that can scan the ABS system. My question is, has anyone else encountered this problem? And if so, what was the ACTUAL problem? I've heard that the sensors can be picking up dirt and whatnot. But how much did this problem cost to fix? I'm having a problem getting my truck inspected because of this, and a broken seat handle that won't allow me to adjust the seat in any other position than the position it is in now. The seat handle to lean the seat forward is still on there...but the one to adjust how upright you sit is broken. Anyone with any help or insight on the ABS/Brake light problem, it would be GREATLY appreciated. Thanks.