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Guys, It's been a long time since I've been to this forum or even touched my EFI Live and my memory is very poor. Back then someone suggested to change P0741 to not reported. The theory was that if...

Hey guys. Just wanted to let you know that I flashed in Taz's changes and no longer have the TCC unlock problem and the associated P0741 code. Basically he turned off the P0741 reporting and that...

CV8, thanks for posting the tune. As Taz reported, it does show it uses an ISS so won't help my problem. Thanks for taking the time to help. Hopefully by the end of the week I'll be able to try Taz...

Taz, that's exactly what I was going to try next, not reporting P0741 and see what happens. The brake switch changes may help too 'cause from what I can tell so far I'm not sure that these newer...

Hi Eric. Thanks for the help. No, I don't know for sure that it's the the lack of ISS or what's causing the problem. Apparently the ECM or TCM in my configuration runs tests on the TCC. My...

Thanks Taz. Appreciate the quick response and all your previous help. Not the answer I was hopeing for though. Still working on my TCC P0741 unlocking problem that you've been trying to help me...

Apparently, from the research I've been doing, the '06 Holden Commodore and HSV use E38 ECM and T42 TCM. Earlier and later Holdens use a different combination. There are a number of posts on this...

Guys, pulled the two purple wires from the brake switch, cleared DTC's, and went for a drive. Thought the car would die when I put it in gear or come to a stop, but it appeared to drive and stop no...

Taz, Ian , thanks again for your help on this issue.

Taz- yes I do have a brake switch and I believe it's hooked up as you said. I also have a similar gen III car and I believe we wired the brake...

Thanks Taz, slow for the help. Yesterday I went ahead and changed c0611 to 1degree, reflashed and went for a drive with the v2 scanning. Misfires stayed at 0 but after about ten minutes the TCC...

The DTC codes p0716 and p0717 are still shown as reported codes, but they are not showing up. Only P0741 shows up.
I've also read a number of posts with related issues saying to set C5601 "misfire...

Hi Joecar. Thanks for responding so quickly. No it doesn't have an ISS. It's a GMPP purchased two years ago when the project began. Scanning while driving shows TISS as zero, and TCCslip appears...

I have a 62 Corvette/LS3/4l65E E38 OS 12617631 /T42 OS 24239927

After a few short drives my TCC stops working and gives code P0741 "TCC system stuck off". Clearing the DTCs allows normal...

Hi Guys. Ihave a 62 vette, LS3, 4l65E, E38/T42. Does anybody know how I can operate my aftermarket cooling fan (one single spd 12 volt) using the ecm's pwm signal. Thanks, Gary