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International Automotive Technicians Network
Re: AC locked out by ECM
Posted to Technical Discussion Forum on 7/8/2009

I'm not sure if your system is the same as a 1992 Chev Lumina but I had a similar experience and when I checked it out I noticed the high pressure for the power steering read yes which will interrupt the air conditioner clutch. after I replaced the pressure sw... Login to read more.