1992 GMC problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChevyTech · 03-19-2006, 09:19 PM

Hi Dave and welcome to the board.

My first guess would be that the problem with your truck is the temperature sending unit for the gauge. It should be located in the cylinder head on the surface where the spark plugs are located. Do not confuse this with the temp sending unit mounted in the intake manifold which is for the ECM (computer).

It is possible that the problem is related to the tachometer (RPM Gauge) bouncing problem you have and if so you should be looking for a bad or marginal ground connection, but my first guess is the sending unit.

Once again, welcome to the board.
Chevytech

03-19-2006, 09:19 PM	#2
ChevyTech Registered User Join Date: May 2004 Location: Minnesota Posts: 4,621	Re: 1992 GMC problem Hi Dave and welcome to the board. My first guess would be that the problem with your truck is the temperature sending unit for the gauge. It should be located in the cylinder head on the surface where the spark plugs are located. Do not confuse this with the temp sending unit mounted in the intake manifold which is for the ECM (computer). It is possible that the problem is related to the tachometer (RPM Gauge) bouncing problem you have and if so you should be looking for a bad or marginal ground connection, but my first guess is the sending unit. Once again, welcome to the board. Chevytech



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