For the 5-spd? Yes the '95 Isuzu tranny can be swapped with the newer 00+ Getrag tranny however the whole shift assembly, cables and transmission/clutch assembly must be swapped aswell. Also new transmission mounts have to be welded to mount the Getrag on the 95-99 engine. Check out J-body.org, there should be a few how-to's on that site.
You have to pull the transmission...sorry
You can take transmission out of a 2005 Buick and put it in your 1995 Buick regal.
Should be a plug on the side of transmission
To test a 1995 Cavalier crank sensor you would need to get a mechanic's computer. They can put a sensor/fuse tester on it and see if it is working properly.
put some oil in it ?
For automatic transmission: remove transmission dipstick, put fluid in dipstick tube with funnel. be careful not to overfill.
Yes. Google search "automatic transmission 2002 kis sportage".
in dip stick tube
as long as it is an automatic transmission, you put ATF in