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dfrank · 09-25-2014, 09:13 PM

You probably just need a new temp sensor. It is located on the drivers side head. Mine did that not to long ago.

09-25-2014, 09:13 PM	#7
dfrank Registered User Join Date: Aug 2014 Location: Pittsburgh, PA Posts: 627	Re: Hello everyone I'm new around here, just picked up a 78 gmc sierra grande You probably just need a new temp sensor. It is located on the drivers side head. Mine did that not to long ago.