SSE HVAC It will not turn off!!!!!!!!!!!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-14-2004, 08:51 PM   #1
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Default SSE HVAC It will not turn off!!!!!!!!!!!!

Well my Bonneville is starting to give me fits. The blower motor for the HVAC system will not turn off. If the key is out, the doors open, the engine off, and all the lights on the dash including the radio are off it still runs at full speed I cannot figure it out??

Any ideas

Daniel
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Old 03-14-2004, 08:53 PM   #2
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Try jiggling the proper relay.
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Old 03-14-2004, 08:54 PM   #3
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Hang on a sec i'll go out and try
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Old 03-14-2004, 09:00 PM   #4
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No Dice. Which relay is it? I wnt to the underhood relays and wiggles those. And the underhood fuses. What next?
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Old 03-14-2004, 09:02 PM   #5
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I forget which does what. I don't know what else to suggest except pulling the fuse until someone has a better suggestion than my dud.
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Old 03-14-2004, 09:04 PM   #6
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Well I just unplugged the fan motor.
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Old 03-14-2004, 09:14 PM   #7
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When I unplug the A/C fuse in the engine compartment the fan goes off
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Old 03-14-2004, 09:30 PM   #8
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The compressor fuse? I thought just the power for the compressor got sent through it. Guess not.

Oh wait, fuse... yeah, isn't the whole A/C system on the same fuse?
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Old 03-14-2004, 09:35 PM   #9
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there are actually three fuses for the A/C one in each fuse compartment. The one in the engine compartment is the only one that will turn off the HVAC fan

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Old 03-14-2004, 09:42 PM   #10
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I knew I should have brought my sevice manuals back with me. They have great wiring diagrams.
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