Spd-Kilz

TC Lockup has never worked in my car...before I bought it somebody unhooked the TCC Wire and zip tied it up out of the way. Fast forward to this year and I had the trans rebuilt with the addition of a mild shift kit. Put it all back together, hooked up the TCC wire the way it should be; but still no lockup. Not really sure where to look next...suggestions? I had the shop that did the Re & Re check the wire to make sure it runs the way it should and everything apparently checked out. I'm stuck...after spending nearly $2K...I expect this kind of stuff to work.

jmd

iTrader: (4)

Put a test light to the wire (s) of the plug that switch the TCC to see if they're functional at speed.

If yes, troubleshoot the trans.
Else, see if the ALDL ground locks it up

If yes, see if the ECM commands pickup at the harness at speed.
If yes, troubleshoot wiring, else check the PROM code.

Might be wise to follow the factory svc. manual.

Spd-Kilz

Thanks for the reply jmd. Had some time today to fiddle with the car...still not working but here is what I tested.

Tried to short out the A and F Pin on the ALDL at speed...did nothing.

Tested the pink/black & purple wire that go to the brake switch, both seem to work as they should (one has constant power, the other has power until the brake pedal is pressed; then power goes out).

Tested the grounds on the A and F pin separately by hooking the crimp end of the test light to 12V. Both are grounded.

Unfortunately I don't have the space right now (and it's friggin cold out) to get under the car to test on the trans plug side of things. If/when I do...what would one test under there?

I'm contemplating taking it back to the guy who rebuilt the trans and paying him to look at it a bit (but could be a slippery slope).

Thoughts/suggestions?

Spd-Kilz

Was out there again after doing some reading on here. Should I be getting 12V off the F pin on the ALDL? I don't.