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95 S_Trucker · 06-29-2014, 05:11 PM

There is a sensor for the pcm located by the thermostat. There is a sensor on the side of the left cylinder head for the gauge. Unplug the sensor on the cyl head, then turn the key on and see what happens. Then ground the pigtail with a jumper wire and watch the gauge.

06-29-2014, 05:11 PM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: Temp sensor in 1997 tahoe There is a sensor for the pcm located by the thermostat. There is a sensor on the side of the left cylinder head for the gauge. Unplug the sensor on the cyl head, then turn the key on and see what happens. Then ground the pigtail with a jumper wire and watch the gauge.