[bstrom1953]

If you have some experience working on cars, you should be able to do this. First, be sure you are working on a 3T40. It's printed on the bottom of the tranny oil pan.

Jack up the car and put jack stands or something safe under it so you don't get crushed, take off the driver's side tire. There may be a plastic or rubbery splash guard you need to remove so that you can see the cover on the tranny. The cover is basically round and about 8 inches in diameter if I recall correctly. THere are about 8 bolts to take out...about a half cup of oil will leak out and then stop so don't panic. The cover comes out with a little wiggling, at least it did on my 91 Skylark...take your time.

THe solenoid is mounted on the bottom...lay on your back or side to work on it. You will see two wires leading to it. The new solenoid I bought at Napa had some wire connectors supplied to allow you to splice the new solenoid wires into place. Be sure to observe the polarity since reversing the wires on a solenoid reverses the current flow and will reverse the direction it pulls or pushes. INstall the new solenoid. Splice the wires.

Put the cover back. I was told the cover has a teflon gasket or something like that. Anyway, it is supposed to be reusable so you don't need silicon sealer or anything. Mine went back together with no goop and it didn't leak.

Check you ATF level before testing. Good luck.