blend door flaking out - 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 09-18-2005, 05:03 AM   #1
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Default blend door flaking out

ok here go'* the blend door for the heat /cold is flaking out hou do i get to it and is it a comon prob i do have the ACC and need help ben going from AC to HEAT almost everyu day and need help
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Old 09-18-2005, 11:18 AM   #2
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I'm in the same boat as you with the 95. Waiting for the 93 to get back from the trans shop so I can fix the 95.

Pull your glovebox liner out, and look down through the opening with a flashlight while you try to adjust the heat. Try to determine if the actuator is moving, or if the door is broken.
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Old 09-19-2005, 01:20 AM   #3
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well the door is not broke it just dose what it wants most of the time but some times it will work with out a hitch for a week but then some times it dont do any thing
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Old 09-20-2005, 11:40 AM   #4
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I have rigged mine up with a screw driver and zip ties. Full cold during summer...Add a zip tie for warm (spring/fall). It will default to hot if screw driver is removed.

Until I hear of an easier fix than dash removal, this way works for me.

I could not get any of the dash screws to budge, so I rigged it...
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Old 09-20-2005, 12:16 PM   #5
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If your door is wandering, it'* probably got a disconnected or broken linkage. The airflow from the hot and cold manifolds is pushing it like a weather vane.

My door is stuck on full cold. And in that classic pic that Randman took, where you can see his actuator with the glovebox removed, I think that was his 93. On my 95, I can't see down there like that. I'm going to do the rip and tear on the dash to get to it as soon as the Zilla is firmly back on her feet.
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Old 09-21-2005, 02:30 AM   #6
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it dont wander it just some times will not go eather cold or hot but other times it works perfect can get it to work some times by turning it off then back on real quick
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Old 10-22-2005, 03:00 AM   #7
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ok took out the glove box and it is moving back and forth like it is lost and if i go up and down with the temp from 90 to 60 back to 90 i can get heat i am starting to beleave that the programer is headed south
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