1991 Corsica its under the trottle body
It doesn't have one, it is distributorless.
For a 1991 Chevrolet Corsica : My Chilton's Auto Repair Manual shows : ( 15.6 U.S. gallons )
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.
Green coolant (prestone, etc)
Depends on which engine it has. Try a Google Search.
16.5 to 17.1 gal
As soon as you pop the hood, it should be to the left of the engine. it is visible from top view.
how can i change the turn singal on a 1990 Chevy lumina
its behind the coil packs on the back of block
just work with it until you get it open. try getting in and kicking from the inside...