2001 Monte SS (97500 miles) - Last week the Temp gauge (stock) didn't budge for a good 2 hours. Since then, it's been OK. Question, is there a sensor that could be going? If so where is it located and is it an easy fix? Anyone had similar problems?

Any info appreciated.

Thanx!

 

coolant temp sensor could be going...

its right beside the t-stat(on most vehicles...not 100% sure on ours as i haven't had to change it yet)

it should be where the upper rad hose meets the block is where the t-stat will be, change that and this sensor and should fix your problems

 

When the temp gauge wasn 't working, was it on a cool day? And when it started working, had the outside temperature warmed up a little. It could be your thermostat is stuck open. That's what happened to my 01SS. I replaced the thermostat and now my gauge works just fine. A lot of people replace the sensor and the thermostat at the same time. That's probably a good thing to do since you have to drain the radiator to do both. But for me I just replaced the thermostat and all is well. Hope this helps.