HVAC control problem
I am not sure if the s10 controls are vacuum operated but if you have a vacuum leak on your ac control line like on the ls1 cars it will default to defrost/floor only...if you can not get it to turn on or anything I would assume you need a new controller...
TECH Fanatic
Joined: Aug 2006
Posts: 1,407
Likes: 63
From: Knappa, Oregon
On a Firebird or Camaro that part of the control is operated by vacuum. There is a round piece behind there that has several small tubes attached and when you turn the **** the vacuum selects a different part to operate. You probably have a vacuum problem.
The fan part of your HVAC control is just an electrical switch and the hot/cold blend is cable operated.
If you can get your head down in the floor well on the passenger side see if you can hear a leak or hear the control change, with the engine running of course.
The fan part of your HVAC control is just an electrical switch and the hot/cold blend is cable operated.
If you can get your head down in the floor well on the passenger side see if you can hear a leak or hear the control change, with the engine running of course.
