Re: PCM is not grounding fans properly
Could the PCM be using PWM to control the fan speed? That would wind up just cycling the relay and making it buzz/click.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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