Doors from a 1977-79 Caprice or Impala would be interchangeable.
If it's a similar bodystyle, all doors from a 1980-1990 Caprice would be interchangeable.
Any door from a 1977-79 Caprice/Impala would fit (assuming it's a similar bodystyle)
No, auto parts stores show different part numbers.
I personaly think it did not die.
Yes it will.
Needs a good tune up?
In the '95-'96 caprices there was a 4.3 or if you have an ex-cop car there is a 5.7 h.o.
a vac leak
Depending on what parts you need, just about any Caprice parts from a 1980-1990 would work on an 84, or an 80-85 Impala.
No, these are likely completely different platforms, though I can't recall when the LeSabre went front wheel drive. If the engine is transverse, there are no compatibilities with a Caprice.
Child safety latches engaged?
need year, and engine size