This trans is in a LS2 powered Blazer running a 2007 TrailBlazer SS E67 ECM. I have tried everything I can think of and read about to make this thing lock but, it won't! I can force lockup using a scanner - so the TCC is working.
Here is the tune. Please reply if you see a reason for no torque converter lockup.
May seem like a dumb question but is your brake switch hooked up properly?
1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
- 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger
The brake swithch is not a dumb question. I assume you mean NO or NC contacts.
I toggled the brake switch while in a TCC lockup condition - low TPS above 50 MPH. Still no lockup.
post a log with the tcc, tps, ect info in it..
We Can Fix Your Bricked PCM Or Your YYYYYY OS ID
It should lock up part throttle according to your values... never lock up in 2nd regardless of values, and only lock under 93ish mph in 3rd (WOT) if your already locked.. The T42 is an asshole.. It will unlock if you let your foot off the gas.. Watch the TCC PIDs..
It sucks big time. I may dissassemble a mouse and mount the left click button somewhere near my shifter.. leave the mouse cursor on tcc pwm on.. and click as needed.. pathetic. but necessary on long trips.
2006 Trailblazer SS - Stalled, Cammed, Tuned, Turbo'd, Built, and Stroked.
Runs on cash, blood, sweat, and tears...... and 93 octane.
2007 Cadillac STS-V - Stock.
Your file looks like a 2006 TBSS file. I have a 2007 TBSS, and there are some small differences.
may not be your issue, but make sure you dont have any misfires...
misfires make it not lock.
you can log misfires in the scanner
it cant hurt to check it out and its a commonly overlooked problem
-Scott -
Reply With Quote
