Thread: Trans problem with 96 Grand Prix - need a little help, please

It likely isnt anything electrical causing your problems. The last time you drove the car everything worked perfectly normal? Have you tried letting it warm up a good while to see if anything changes? There are a number of things that could cause your problem but they are all internal. If pulling it into manual 1 doesnt help much then your problem is likely in the input clutch drum or you have a stuck valve in the valve body. Will the car pull itself at all in D-1? If it just feels like its stalling up really hard like its starting off in 3rd or 4th gear then it could be another problem.

I would check fuses first thing. If there is no power at all going to the transmission then it will take off in 3rd gear and will take off in a lower range if manually pulled into a lower range, I believe only 2nd gear and not 1st. There should be a pink wire on the harness that plugs into the front top area of the trans, this will be your 12v + wire and should have ignition voltage. If not then this is your problem.

I just looked at the wiring schematic for your car and the fuse should be labeled TCC/Cruise 15A fuse, Underhood fuse box

Glad to hear that fixed your problem! The fuse could have blown for a number of reasons but likely wasnt from a bad solenoid in the trans. One of the wires that comes off of that fuse runs to a switch on the brake pedal and then back out to the TCC solenoid to dissable power to it during braking so the engine wont stall. More often than not its a bad switch or wiring problem that would blow the fuse. If it happens again then maybe you will have something concrete to search for but intermittant problems can make you chase your tail for a long time.