C chrisk New member Joined Apr 26, 2017 Messages 2 Reaction score 0 Points 0 Apr 26, 2017 #1 The air conditioner on my 94 GMC Sierra truck is sporadic. I have the fan on high and it will only go to off or low speed. When I press the brake, the fan speed goes back on high. Any ideas?
The air conditioner on my 94 GMC Sierra truck is sporadic. I have the fan on high and it will only go to off or low speed. When I press the brake, the fan speed goes back on high. Any ideas?
