Yes
High
Monte Carlo Pontiac Gran Prix
78-87 Monte Carlo is a G-Body GM car that is smaller than a 77-90 Caprice which is a B-Body GM car. The seats in a Monte Carlo will fit in a Caprice, but they may not look quite right. You will need to do bolt location modifications. I would not recommend trying to use a bench seat from a Monte in a Caprice. It is not wide enough.
No, Fiero seats are pretty special to fit in where they are. I recomend you repair your old with parts from the fiero store.
Yes
How to remove front seats on 1971 vw Beatle
There is a little loop on the side of the seats that you can pull down.
Call your local salvage yard and have them cross referance it also I know that the Pontiac sunfire will fit not sure what else might.
check to see that you don't have a blown fuse in the fiusebox for your heated seats and also make sure all the wires are plugged in under the seat.
Anything 1995-1999 monte carlo "SHOULD" fit cloth or leather, power or no power, Not sure what I like better yet but all I know is the leather seats gm made for this car are horrible quality and very uncomfortable.
you jank it you jank it