My Corsica's temp gauge went out, and to replace the OEM gauge would have required buying the whole instrument panel. We bought an aftermarket gauge and mounted it under the dash. It cost much less, and hey, it's not a show car so I don't mind that it's not 'perfect'.
Just find the temp sensor on the engine (driver's side of car on back side of engine), and either use the sensor wire there or replace with one that works with your gauge.
1991 Corsica its under the trottle body
We replaced the temperature gauge in my 1991 Chevy blazer what is the normal operating temp?
For a 1991 Chevrolet Corsica : My Chilton's Auto Repair Manual shows : ( 15.6 U.S. gallons )
It doesn't have one, it is distributorless.
13.6 gallons
Green coolant (prestone, etc)
You have to take the door apart
Depends on which engine it has. Try a Google Search.
16.5 to 17.1 gal
Remove the wiring harness from the back of your 1991 Chevy Corsica turn signal. Remove the turn signal retaining bolts. The entire turn signal will come out. Reverse the process to install the new turn signal.
There is'nt one on the guage cluster but there is on the motor up by the thermostat housing
As soon as you pop the hood, it should be to the left of the engine. it is visible from top view.