91 Lumina 3.1 Tranny Or Stuck Brakes

I Was Having Recent Problems After Putting In A Bottle Of Lucas Transmission Fluid Supposed To Help Older Cars But After I Put It In I Immediately Felt A Difference At First I Thought For The Better Soon After When I Would Put It In Reverse I Would Have To Shimmy It Up And Down From Park To Reverse To Neutral And Back It Would Catch Eventually And Now Today It Wont Go At All Reverse Or Drive I Got Off The Car To Push It And It Was Stuck I Rocked It Back And Forth And It Started To Roll After A While And Then I Was Able To Drive Forward But Once I Take It Out Of Drive It Gets Stuck Again Please Help Me Guys!!!!!!!!!

I wonder if you washed out some varnish or solids that are now hogging up the valve body...

People don't usually put additives into a tranny that's working fine...so what was the original problem?

I Know Dumb Move By Me Well The Reason Was I Had Purchased It And It Was In My Trunk For A While And Read The Bottle And It Looked Like It Couldnt Hurt. My Tranny Was Working Perfect Stupid Me Well Thats Done With What Do I Do Now?

I'd do a pan drop and filter change, partial fluid change, see what happenes. You might get lucky and the filter just got shotgunned with more crud than it could handle all at once.

You're not overfull now are you? That can cause problems with engagement. Foams the fluid...

i am a little overfilled how do i drain a little out?

12mm I believe bolts, get a VERY large pan (do you have a cat whose litter box you could borrow?) and do it from narrow (right side of car) to wide, and hope you lose most of it in the pan. Make sure you buy a gasket as well as a filter, Napa's $24 dollar set has never failed me on my gm's. Good luck

ill try that thanks i also just noticed the emergency brake feels like its set the pedal is very easily depressed but the brake release doesnt seem to do anything any suggestions?

ill try that thanks i also just noticed the emergency brake feels like its set the pedal is very easily depressed but the brake release doesnt seem to do anything any suggestions? The brake pedal has to be pumped to be set. I had a very easily depressed one, the brake isnt actuallyon until about the 3rd pump after it gets firm. Replace your rear brake pads (mine didn't have squealers) Now one pump and its firm on. It is also possible, though highly unlikely if this is a daily driver that you JUST started using after years of sitting, that the piston seized up, however, just try pumping the pedal a few times.