temp light flashes - 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 12-31-1969, 08:00 PM   #1
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okay, i had my car scanned. After consulting my GM service manuals, it seems I need to replace my HVAC programmer. Anyone know anything about this? It doesn't sound like its going to be cheap!

Lee
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Old 12-31-1969, 08:00 PM   #2
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HEY I HAVE A 1996 BONNEVILLE FLASHING LIGHT WITH NO COLD AIR > BUT PUMP IS WORKING. I THINK THAT THE LITTLE MOTOR THAT MOVE THE HOT TO COLD TEMP IS BAD??? ANY IDEAS???

ALSO HAVE A 1991 BUICK PARK AVE SUPERCHARCED WITH FLASHING READ OUT AND NO AC AT ALL?? ANY IDEAS??
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Old 12-31-1969, 08:00 PM   #3
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can you get the buttons you push for the 92-93 units, i got a 92, and its flashed a couple times, but works great now.

Ryan.
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Old 12-31-1969, 08:00 PM   #4
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Hey all. For awhile I have noticed that my digital exterior temperature gauge flashes when I first start the car. While its flashing, the A/C won't kick in and instead I get blasts of hot air. However, when it quits flashing, anywhere from 15 seconds to 2 minutes, the cool air pours in. Any ideas?
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Old 12-31-1969, 08:00 PM   #5
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Hmmm...my '93 SSEi began flashing the temp a few months after I bought it in '99, but I wasn't so lucky...mine never stopped flashing, and didn't blow cold air. My compressor had to be replaced (along with the dessicant unit, pressure switch, etc.), then a leak was fixed, and then the radiator-like unit behind the dash had to be replaced, all within 6 months of ownership. It cost me $1,500 and they did the work on several different occasions until they got everything working again.

The digital climate control unit on my '92 and '93 have built-in diagnostics. You press and hold 2 buttons to start the diagnostics, but I don't remember which ones. I can look it up in the shop manual for you if you want. Anyway, the flashing temp might mean that there'* an error code stored. Mine was code 60 or something like that, which meant that it was low on freon.
Good luck with yours...maybe it'* just low on freon or something simple.
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Old 12-31-1969, 08:00 PM   #6
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i hope it is too
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Old 12-31-1969, 08:00 PM   #7
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I have a set of GM shop manuals, I'll look her up!

Lee
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Old 12-31-1969, 08:00 PM   #8
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Ahhhhhhh The lovely temp flashing. Mine did this for a while, and unfortunately it only blows cold air on rare ocassions. Other than that its Hell on wheels with hot air blowing constantly. According to my dealership they said it was a Door Actuator behind my dash. $450 in Labor only, No parts considering all they have to do is remount the door. Thats gonna be a summer thing for me since I am too lazy to save for that right now.
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Old 12-31-1969, 08:00 PM   #9
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interesting... I'm taking my car to a friend who has a tech1 and that'll tell me the code, I pray its something cheap or something I can do myself.

Lee
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Old 07-09-2002, 04:30 PM   #10
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Sounds exactly like my problem(*). I was told it was the air mx doors behind the dash as well, but its gonna cost you alot more than $450, the whole dash needs to come out. I'm doing it myself, I just hope once I put the car and dash back together the frekin thing works!!

Did anyone ever persue this further and find a cause / solution ?
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