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  1. Jjk1988

    92 gmc 1500 heater control stays on

    Hello I have a 92 gmc 1500 extra cab. Every since I bought it the heater control stays on all the time. Even with the key off. The fan even stays on. Is this a common problem with the control unit? I haven’t looked too far into it. However at some point this pickup had an after market alarm...
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