Good morning all.
I have a 2006 GMC denali that the previous owner hide alot of things now i am dealing with it,
The truck has an airbag light, ABS and BRAKE! light on.Could that be all related? Or individual issues? As well the AC compressor wont engage. I swapped the two sensors and charged the system to the factory spec charge. As well changed the relay. The only way to get the compressor to activate is to jump the relay. Then it works. Any route you guys can lead me on. Id be grateful

 

Welcome.
Try to stick to one issue per thread please.
For the trouble lights you're going to need a diagnostic scan to see why they're on. Just swing by your auto parts store. Trying to guess is a waste of time.