Defroster Problem?? - 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 09-28-2003, 08:30 PM   #1
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Default Defroster Problem??

ok, I have a 97 SSe and whenever I get into the car in the morning and push the window defroster window, it turns my A/C on too and it won't let me turn it offeven if I set the temp at the highest. The only way that I can get it to turn off is if I hit the mode button to put the defroster and floor on at the same time. Help please? THanks in advance!
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Old 09-28-2003, 10:08 PM   #2
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Actually, you don't have a problem at all. The A/C was designed to come on whenever you hit the defrost button. This removes the moisture faster from the windshield as the A/C is a dehumidifier as well. But when the outside temperature falls below freezing the compressor is designed NOT to engage.
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