If the modes are all gayed out it might need a mode actuator (side of case above gas pedal). Fan speed and output issues are different. When was the last time you checked/replaced the cabin filters?
If the modes are all gayed out it might need a mode actuator (side of case above gas pedal). Fan speed and output issues are different. When was the last time you checked/replaced the cabin filters?
I was suspecting the cabin air filter but didnt know where it was on our trucks.