You need to be more specific as to what is not working.
The blower doesn't work? No air comes out? Air comes out but is cold?
With any vehicle, start with the wheel furthest from yhe master cylinder, and work closer.
Check fuses
check your fuses
Any Chevy Celebrity sedan or station wagon front door from 1982 to 1989 should fit and work correctly. Sedan back doors will not work on a station wagon, station wagon rear doors wont work on a sedan. The window frames are slightly different. I would look for them in a wrecking yard.
Check the fuse
Yes it will.
NO, It will not work.
I would suggest that you take your car to a wheel shop and see what they have that will work.
thermostat
If the engine is designed for a front wheel drive car then it might fit. If it is for a rear wheel drive car then it probably will not work in a Chevy Celebrity.
4 wheel drive does not work 1989 chevy half ton pick up silverado
interested in any info. on 1989 cavaliers on mods. or ways to work on them .