Information on 91-92 gm c/k trucks gm bullitin (92-201-1b) problems with false clutch cycling would set of the a/c flashing light. GM would have you remove the a/c control had and disconnect the dk green circuit wire. this disables the low charge detection system. This only applied to 91-92 c/k trucks. tks, DanO
'91 GMC Air conditioning problems.
My air has always worked well but the compressor always made what i call a groaning noise when it operated and I could hear this inside the truck. I have owned this truck since it was a year old. Once in a while the AC would flash on the heater control and I would disconnect the battery and reset and it would work again. Now the AC doesn't work at all and the AC flashes every time I start it up. Is this more than a recharge problem?...is it worthwhile to try to fix?...thx
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