A/C and cooling fans quit simultaneously... - 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 06-23-2004, 12:07 AM   #11
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Use the procedure to clear that code. One thing that is noteworthy: Code 66 cannot be cleared on the ECC, you have to disconnect the battery. That'* because the code 66 is shared by the PCM, so it is just like a PCM code too.

I'm not sure the criteria that sets Code 48, but it'* possible you have long term freon loss, causing your compressor to cycle more.
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Old 06-23-2004, 10:11 AM   #12
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I cleared the code, works great now. Thanks guys. As per fuddy'* insight, I will keep an eye on the compressor and lines. I hope I'm not losing any.
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