My 2010 GMC Acadia SLT started showing some issues recently. I need your advice to pin-point the culprit. The problem started like while driving, it shows Reduced Engine Power with check engine light ON and the car barely moves (with very less power) and with a smell of gasoline inside the car...

2012 AWD having some cooling issues. Started when I was towing jetskis but now all the time. No codes present. I have replaced all relays, cooling fans, radiator and cap, thermostat, water pump, both hoses, engine temp sensor, added large external trans cooler, and checked/added refrigerant...

Hello Everyone, I have a 2009 Acadia that is just out of warranty at 42k miles, but the problem has been in effect since before it was out of warranty. My problem is that when i accelerate from a dead stop I hear a thud/crunching noise from underneath the vehicle and then once you accelerate it...

Parking brake light on screen flashes. Smaller parkbrake with wrench on opposite side of screen. Can I do anything or am I stuck.having it towed?

Does anyone know which fuse controls the onstar module? I've looked at the owners manual and the diagrams for each of the 3 fuse boxes and none of them say onstar