1996 Chevy Blazer Cabin Air Controls

Tiny
ZUVACHI
  • MEMBER
  • 1996 CHEVROLET BLAZER
Heater problem
1996 Chevy Blazer 6 cyl Four Wheel Drive Automatic? Miles

My 96 4.3 blew a rod or w/e and we replaced and installed a 97 4.3. Somewhere in the installation process we must have missed hooking up the air controls part? No matter what setting I put my controller on (MAX AC, Defrost, Floor, etc, cold, warm or hot) what actually comes out is Vented Defrost. What do I need to do to make my controls work again? We suffered without AC over the summer but we NEED heat this winter or the vehicle will be undrivable. I live in northern michigan and vented defrost is not going to thaw my windows! If anyone can help me I'd appreciate it.
Saturday, September 6th, 2008 AT 12:14 PM

3 Replies

Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Sounds like the vacuum line that goes into the interior is disconnected. Look along the firewall in the engine compartment on the passenger side. There will be a plastic vacuum line that gets connected to a fitting on the engine. The fitting is usually near the distributer area on the engine. It has a T on it that may have been removed and connected directly.
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Saturday, September 6th, 2008 AT 1:03 PM
Tiny
ZUVACHI
  • MEMBER
  • 3 POSTS
Awesome thanks, we just got back from a trip to town so it's too hot to be sticking my bare hands around back there to find a hose but when it cools down i'll check it out and let you know how it went.
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Saturday, September 6th, 2008 AT 3:42 PM
Tiny
ZUVACHI
  • MEMBER
  • 3 POSTS
Sorry about the huge delay, I followed the hose from the passenger side over until I found that the vacuum hose was unplugged on the drivers side and plugged it into a hose on the hood. Now it works thanks :D
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Monday, September 22nd, 2008 AT 1:45 PM

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