Re: PCM is not grounding fans properly
Same problem here. One fan works great 2nd fan pulses and relay clicks. 2000 5.3 4L60E swapped into a 72 C10. Don't have ac hooked up but that is why I bought a 2 fan set up. I will update post if I figure it out.
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67 c20 68 c10 72 c10 69 GMC 72 short step
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