Buy a new Speedometer cluster. The external Temp gauge is extremely rare
Bad temperature sending unit? Bad gauge?
We replaced the temperature gauge in my 1991 Chevy blazer what is the normal operating temp?
what would cause a oil pressure gauge to fluctuate on my 99 Chevy truck silverado i change the sending unit it does it mostly after it warmed up
replace temperature gauge
were is the fuse for speed gauge
Check the sending unit between the left first 2 spark plugs. Ground the wire with key on (gauge should peg full hot). If it does change the sending unit.
Check to make sure that the temperature sensor is good. A bad sensor is commonly the cause of the temperature gauge not working.
It is easier and cheaper to replace the temperature sensor--try that first
I would replace the thermostat. This sounds like the thermostat is stuck open.
You need to replace the gauge cluster... I hate to say that, but that is the only fix. It is common on the silverado series trucks as well. This was verified by 2 mechanics and the Chevy dealer.
195 to 210 is normal
Yes if one or more gauge is reading wrong