HVAC Issues - Please Help - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-19-2010, 10:24 AM   #11
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Default Problem Solved

You guys are great. With your help, I solved the heater problem. Thank you so much.

Yes, the air mix actuator on top of the heater box was stuck. I couldn't actually see this when I started the work this morning. There are only two small holes to see what is going on when I removed the glovebox. So, I actually did something unique. I drilled a few more holes in the metal so I could see what was going on. See before and after pictures.

The arm was stuck somewhere in the middle. So I pushed it straight / towards the left and the air got colder. So I then pulled it back towards the right and voila, the air got much hotter. I am saved for the winter.
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HVAC Issues - Please Help-glovebox-removed-before-holes.jpg   HVAC Issues - Please Help-glovebox-removed-after-holes.jpg   HVAC Issues - Please Help-air-mix-arm.jpg  
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