heater and air don't work right - 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 09-26-2004, 12:30 AM   #1
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Default heater and air don't work right

my air does not adjust it just blows hot air at times then i shut off my car and start it again and it will adjust normally the dealership told me it was my programmer for the digital control i bought a used one at the salvage hooked it up and it does the same thing NEED HELP ASAP my wife it getting owly not haveing her air
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Old 09-26-2004, 12:35 AM   #2
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We need to know your year and trim level to help you. Put that in your signature.
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Old 09-26-2004, 04:39 AM   #3
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I have this same problem, and I can also attest that replacing the control unit does not help (much). Do you have the digital climate control unit on the 95-96 and up (and possibly before that)?

One possibility that i've yet to check out is that one or more of the vents are broken/stuck/plugged... gotta get around to that
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Old 09-26-2004, 09:42 AM   #4
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I had a similar problem. It was the motor (controlled by the programmer) that opens and closes a flap in front of the heater core. It is located on top of the heater box and is difficult to change out. More info here:

http://bonnevilleclub.com/forum/view...360&highlight=.
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Old 09-26-2004, 01:27 PM   #5
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Alot of really good advice here, but we still don't know which climate control he has.

Need to know the year and model to determine which one. It could be:

1. Manual controller. No codes displayed.
2. 92/93 Electronic (Auto) controller. Flashing temp display indicates a fault, you can diagnose through the panel.
3. 94+ controller. Same flashing temp display, but only the dealer can diagnose.
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Old 09-26-2004, 09:11 PM   #6
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I had the same problem as Bill. My Brother-in-law (love that guy) is a GM mechanic and he said that was a tough one to change. So he told me to bring it to his house and he removed the computer from under the dash and then while standing on his head (well almost) he reached up and remove and replaced the unit without ever seeing it. I thought it was one heck of a job. Much better than removing the complete instrument panel to get to it. I had the tough job, I just set there and watched.

It is not that I can't do anything, he is just one that doesn't like people getting in his way and sometimes that works out very well. As a trade-off I got to help him build a room in his basement, but I find I have more time than money so it worked out well.
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Old 09-27-2004, 08:57 AM   #7
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my booneville is a 96 se also can someone tell me how to get that info to come up when i put in a topic i probably skiped it in sighning up
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Old 09-27-2004, 10:34 AM   #8
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Up at the top of this page is a link call "Profile". Click on it and it will bring up your Profile. About half way down on that page you will find a place for "Signiture". You can put your information in there.
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