A/C Only Blow Hot Air - Code 66 - Help Please! - 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 08-03-2007, 06:24 AM   #1
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Default A/C Only Blow Hot Air - Code 66 - Help Please!

A/C has been working fine, but suddenly won't put out cold air - happened to hubby on his way home from work yesterday. Just blowing hot air now. Checked for codes and got a 66. It'* too HOT for this to happen now! :( Any ideas out there? Thanks!
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Old 08-03-2007, 07:57 AM   #2
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Sure..we have many great resources here. I found this in Techinfo under "Computer" and 92-93 codes.

66 - Low A/C Refrigerant Charge

It seems the system may need a leak test and or a recharge.
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