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Huck · 07-11-2002, 10:15 PM

Had similar problem which was solved when GMC Paul told me to re-do the grounds --both at the heater relay and at the fan motor. I suspect that if the jumper wire to the heater is getting hot----you have a grounding problem. Is this an A/C truck?

07-11-2002, 10:15 PM	#2
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,269	Had similar problem which was solved when GMC Paul told me to re-do the grounds --both at the heater relay and at the fan motor. I suspect that if the jumper wire to the heater is getting hot----you have a grounding problem. Is this an A/C truck?