4l80E converter lockup

[4.3dieseljeep]

Does anyone except for BD make a converter lockup device. Mine locks about 55mph and I would like it to lock at 35-45mph. 96 truck

[rjwest]

???????? 96 truck at end of request ??????

96 and newer , OBD2, :
The BD torq loc will set a hidden code and cause full pressure shifts...

I know of no TC lock up aftermarket device thjat will work on OBD2.

A 'resister accross the temp sensor will cause 3rd to lock up sooner,
and hold 4th locked longer. but it will not change 4th lock up speed.
Also lock up 2nd gear TC

Do a search on TCC lock up....