Chevy Blazer
Chevy S-10
Chevy Blazer S-10

How do you repair a temperature gauge on a 1993 S10 Chevy Blazer that comes on when the truck is started and then shows zero if you have already replaced the coolant temp sensor?

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Wiki User
June 07, 2009 1:28AM

Say now, it is possible to dismantle the instrument cluster, and replace the gauge unit itself. Keep in mind that the price of a new one from a dealer may be steep! To put a mechanical gauge in may require drilling a hole in the firewall. Also, the computer may need to monitor the water temperature in order to function properly. If the temperature gauge is not reading, then I would suggest going to a parts store, such as Auto Zone, and getting an aftermarket temperature guage and hooking it up because there is no way to replace the factory gauge.