"The best way to verify proper operation as commanded
by the pcm is with a scan tool by viewing TCC slippage rpm, TCC duty cycle,
EPC data, and checking any codes and making sure the engine is running
properly and a misfire is not a false sense of a torque converter problem or
shudder."

Hi Bill, if you can view TCC slippage and Duty % then it will help to see
what is going on. There is also a TCC ON or OFF data line as well if you
have that available. The TCC slippage should be roughly 0-50 rpm all the
time when the torque converter is locked up. Duty % will vary anywhere from
20%-70% while TCC is ON. It will show 0% or 100% depending on your scanner
when TCC is OFF. If it tries to lockup and slippage is constantly above 200
rpm it will dissble TCC operation and throw a trouble code and it will save
in the history of codes in the pcm. A quick test to verify operation is by
going down the highway at crusing speed and lightly apply the brake pedal.
If the rpms go up a few hundered with the brake lightly applied then it is
working. After you release the brake pedal and you should see the rpms drop
back down a few hundred. There are a LOT of causes to make this happen,
check your fuses first to make sure you dont have a blown one as the TCC
solenoid generally gets its power through a purple wire going to your brake
switch under the dash. I hope this helps and let me know what you find or
if you have any other questions.

Originally posted by 1997grandprixgtpsaginawmi:
yeah I may, but i need mollahhh first. lots of time to save. im lookin at prolly next summer as having a rebuilt motor and tranny into my pimp.

Originally posted by HercMan:
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