The 1991 Chevrolet Corsica dashboard speakers measure 3.5 inches in diameter. The front door speakers measure four inches by five inches. The rear speakers measure five inches by seven inches.
in the dash
yes
The hazard flasher is for a '91 corsica is located in the convenience center. The turn signal flasher relay is behind the dash panel left of the steering column.
Auto-for-auto or manual-for-manual? Like a glove!
The 3.1 L V-6 engine in your Chevy Corsica Has Aluminum Heads
In front, behind bumper.
Connect the wiring harness to the back of your new speakers. Secure the speakers into place with the retaining screws. Put the speaker cover on and secure it into place.
have a look at www.crutchfield.com It's a great site to buy audio gear. Also a great place to gather info.
back speakers not sure what size
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They are near the front headlights, under the front bumper. You Can see them if you look.