Hey Guys, I have been reading some of the forums regarding the Air Cionditioning. When I turn my Air on it only comes out of the defroster vent. Some people have said that this might be due to a vacuum leak. How do i go about finding this. is there a general area under the hood i should be looking at? Does anyone have a vacuum diagram for a 97 Blazer? Thanks in advance.
I don't have a manual for a '97 so this is just a guess. Also I don't know if you have auto or manual air. I think you may have a vacuum leak because sending air to the defrost is a safety feature. you ,ay have a vacuum solenoid at the bottom rear area of the heater box. I believe the vacuum hose (that should have vacuum) is yellow. As I said, this is just a guess.