yes. There are other settings that can override it and force an upshift or not allow a manual downshift though. I forget their labels, but you should see settings in the shift scheduling tab that relate to max RPM or vehicle speed allowed in the up/down shift parameters
Last edited by sgtbilko; 03-19-2024 at 12:25 PM.
Well ive got this working on the car. Its using the Lokar PRND 6L shifter. But as I mentioned, and also as I see others in this thread have experienced, once tutd mode is engaged its stuck there. No time out etc. The only way out of it is to shift to N and then back to D. Quite annoying.
I see corvettes have an "S" position on the shifter after D. Seems thats how they go into/outof sport mode (where TUTD is available).
Also, I think the wiring shown may be backwards, when we first got this running the "UP" caused a downshift and vise versa.
Any of you guys use a shift indicator that ties into the canbus like these?
https://www.zerogravityperformance.c...ar-indicators/
Cant find any reviews from users on them in a search on the net.
i have the square unit in 1 of my cars, a few of the led's died pretty quickly.
but have the smaller round units in customer cars and they are fine are years.
Hi, I?m trying to set this to work on a 6L90e with the OS 24254909 but is not working. It doesn?t change the status to TUTD mode. I?ve tried multiple times with D6 and D4 without success. I?ve disabled the related codes given some previous post, no luck.
PS: I?ve tried this successfully on some 6L80 and 90s with the resistor/switch configuration without problems...
File attached. Please help
Thanks Tre-Cool for the feedback.Originally Posted by Tre-Cool
I have a car that I am having problems with. It is a 71 Chevelle restomod with a PSI conversions harness and ECU, and no BCM. The engine and transmission is a low mile pull out from 2010 L99 6L80 Camaro SS. It has a Zero gravity performance paddle shifter (with CAN display) that mounts behind steering wheel. I have removed the ECU and TCU, sent them to Zero gravity to be programed and reinstalled them. We still do not have functioning paddle shifters. The shifter assembly wires directly to pin 7 on TCU connector. I have contacted PSI next, they were trying to help me. They sent me a vetted file and some ideas. They also sent me copies of wiring diagrams to check, all verified to be correct. They suggested I contact Powertrain solutions. So I emailed them and am waiting for emails back. Everything else work as it should. There are no codes in the ECU or TCU. I have sport mode when the shifter moves, but it never changes to TUTD. I have checked the signal coming from the paddles (with multimeter) at pin number 7, and I get no response but the CAN display on the paddle mount has an arrow that displays up and down arrow as the paddles are depressed. What should the value read on pin number 7 when the paddles are depressed up and down?
When i had this working on my truk before I took it apart to get out of TU/TD mode just hold the upshift button it wold jump back to normal mode without going back to nuetral mode.
Anyone? 🙏🏽Hi, I?m trying to set this to work on a 6L90e with the OS 24254909 but is not working. It doesn?t change the status to TUTD mode. I?ve tried multiple times with D6 and D4 without success. I?ve disabled the related codes given some previous post, no luck.
PS: I?ve tried this successfully on some 6L80 and 90s with the resistor/switch configuration without problems...
File attached. Please help
I would turn the UP/Down Req option off.
Can u also confirm what the logger shows when your shifter is in drive mode & pulled back an additional click.
log the PRNDL Status pid for that.
Hi, can I test on the plug on the gearbox rather than use a resistor? Pin 5 ground and pin 7?
Hi. I turned off and on without good results.
Drive shows D6 and an additional click shows D4.
I programmed the tcm to enter TUTD in D6 and D4 without good results too.
Would you be able to help me if I give this information please?
All of this is really helpful information however here in Australia I keep getting similar replies from grumpy tuners when I ask about standalone harnesses for an L98/6L80 combination. 'You can't modify your harness to run standalone, its too hard'. Has anyone following this thread seen a good thread on here about modifying the harness in the donor vehicle to suit standalone?
most tuners in australia know SFA about tuning 6l80e's properly so im not surprised.
u just need to run a wire into pin 7 on tcm connector, send it 12v via resistor setup.
I've looked & mapped some additional tables into some of the transmission oses. there appears to be a difference in switches between some platforms in regards to Driver shift control (TUTD) & how it activates, which might explain why not all calibrations work for everyone. Luckily a calibration flash or os change to a camaro/corvette one will generally fix it.
I bought a Kilduff shifter and it's got a small circuit board in it which looks exactly like the diagram posted previously in this post. Red to 12v and purple to pin 7.
I've also had tuners say 'oh no you can't use that ECM it's from 07-08 VE Commodore or similar you have to use this one it's from a later model the numbers on it are different. The Australian ones are different to the American ones it causes too many issues'.
Seriously though, how different could an E38 ECM be? Can't you just do as you've suggested and flash it with a known Corvette tune?
I get the feeling that controlling the 6L80 in a conversion swap is either some kind of restricted knowledge or no one knows. After reading this thread back to front several times I get the feeling it's that no one has enough understanding.
Not all OSes can use all the functions you're able to see and change in the Editor. A switch or setting being visible in a given tune file doesn't mean the module has all the code it needs to do whatever that thing is.
hey - im in socal and picked up the kilduff for my '15 sierra. i'm going to attempt to get this working today. i think i'm going to go a different route - i took the shift selector arm off the column and extended the tu/td wires from the column shifter over to the floor shift / kilduff unit. the pinouts off alldata read tu/td so fuck it why not?
were you able to get yours up and running?
There are 2 wires on the Kilduff, one for 12v and the other probably goes to pin 7 on the trans plug. I would get in touch with Kilduff and confirm instructions. I'm swapping an LS2 into an old Volvo 244 but I'm a long way off installing a shifter.
I totally agree, but AFAIK the corvette/camaro calibration works for a 6L80e not 6L90e also, i've read that GM A6 trans are known for getting the TCM bricked trying to write incompatible OS over it... I've never tried it.
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