If we are talking about valve lifters, remove cylinder head and pushrods and lifters will be excessable.
My 91 Cavalier (RS 2.2L) doesn't have one but my 95 does on the left side of the drivers seat.
if it is the same motor yes, but some may have different mounts or wiring plugs
Need more information
The starter on a 91 Chevy cav. is located at the lower front end of the engine. You can get to it better by jacking the front of the car and attacking it from underneath.
Perhaps it was hit by a meteorite. Check for fuel and spark.
Bad heater core.
I have a '91 Cavalier 2.2L My flasher is located behind the fuse box to the left of the steering column. The flasher is mounted against the firewall.
23 City 32 Highway 27 combined http://www.aboutautomobile.com/Fuel/1991/Chevrolet/Cavalier
fuel pressure reg throttle position or ASD relay
Some have it and some don't. My 91 doesn't but my 95 has it on the left side of the drivers seat.
Remove it from the car OR It can be flushed by a knowledgeable person with the correct equipment.
its easy 12 year old son did it in 3 hours