Enable Tap UP Tap Down in Engine SWAPs using corvette tcm tune and external switchs

[400ss]

Been searching alot about this and couldnt get a concrete or complete info on this. So far i found i need the corvette TCM tune. and i find a diagram.

The diagram shows 2 paddles, can i reduce the circuite and leave just one button for upshift and other for downshift like in one of the diagrams a atached.

It shows 3 resistors, 8.25K, 4.42K and 1.5K, do i just ask for a resistor like that? because i seen some resistors are like 1/4W or 1/2W or something like that????

Lets say i finish the circuit, and wired it, and writed the TCM corvette tune. To activate the TUTD function what is needed? just move the shifter from D one step down?? it will be M mode?

If anyone can help i will really apreciate it. i have installed some 6L80E and i would like to be able to use the TUTD thanks

[joecar]

I don't know for sure, but 1/4W will probably be more than ok.

[400ss]

Ill give it a try and if everything works ok ill upload instructions and how to do it from start to finish because i know lot of people wanna know and sometimes people doesnt wanna share the information. thanks everyone

[joecar]

Thanks for sharing :cheers:

[turbo_bu]

400ss - thanks so much for continuing to share your 6L80E swaps. I have been trying to follow along as people have shared information regarding these swaps. Could you confirm which year of Corvette OS you are using in the TCM? I've read that people are using the 2009 OS to get the TUTD, but am not sure if any of the 2010+ OS's would also work.

[400ss]

another info about 6L80E swaps, i recently done 2 5.3L 6L80E, i can confirm that 08 VIN PCM can work perfectly with 07-08-09-10 6L80E model/tunes. if you use a 11 6L80E with a 08 PCm , trans will not activate reverse, or drive.. i think all corvette A6 will enable TUTD on M mode.. the car that im going to try the TUTD function, is a 2001 XJ Cherokee, 5.3L NON VVT and deleted the DOD, it has a 08 VIN/tune so i will try to use a 09-10 corvettte A6 tune

[turbo_bu]

another info about 6L80E swaps, i recently done 2 5.3L 6L80E, i can confirm that 08 VIN PCM can work perfectly with 07-08-09-10 6L80E model/tunes. if you use a 10 6L80E with a 08 PCm , trans will not activate reverse, or drive.. i think all corvette A6 will enable TUTD on M mode.. the car that im going to try the TUTD function, is a 2001 XJ Cherokee, 5.3L NON VVT and deleted the DOD, it has a 08 VIN/tune so i will try to use a 09-10 corvettte A6 tune

So a 2008 E38 ECM can work with any 2007 through 2010 6L80E TCM (T43)? The "if you use a 10 6L80E with a 08 PCm, trans will not activate reverse, or drive" statement appears to contradict your results in the previous sentence. Again, thanks for all the sharing you have done with these great swaps!

[400ss]

So a 2008 E38 ECM can work with any 2007 through 2010 6L80E TCM (T43)? The "if you use a 10 6L80E with a 08 PCm, trans will not activate reverse, or drive" statement appears to contradict your results in the previous sentence. Again, thanks for all the sharing you have done with these great swaps!

Thank you, I corrected , my mystake. im gonna try to explain a litle more why im saying it works.

Did an egine swap using a 5.3L VVT and DOD, so i used if a remember a 11 E38 and the trans was a 6L80E out of a 13 camaro, i just wired it and it worked fine..
another one was a 5.3L NO VVT and DOD, so i used a 08 E38, deleted DOD, the trans was a 2011, it didnt show any engine or trans code, but it didnt activate reverse or drive, only way it activated was if i turned on the car on Neutral, then changue it to Reverse and it activated, then changue it to drive and accelerate it a litle and it did activated drive, but if you stay parked it deactivated again, so changue the VIN using TIS to a 2010 and it worked perfectly. i have done other swaps, and i havent any problems using 07-08 E38 tunes with a 10-09-08 TCM tunes.. sorry if i cant explain myself, but i dont speak english very well, sometimes i dont use the correct words or most of the time

[HartRod]

Thank you, I corrected , my mystake. im gonna try to explain a litle more why im saying it works.

Did an egine swap using a 5.3L VVT and DOD, so i used if a remember a 11 E38 and the trans was a 6L80E out of a 13 camaro, i just wired it and it worked fine..
another one was a 5.3L NO VVT and DOD, so i used a 08 E38, deleted DOD, the trans was a 2011, it didnt show any engine or trans code, but it didnt activate reverse or drive, only way it activated was if i turned on the car on Neutral, then changue it to Reverse and it activated, then changue it to drive and accelerate it a litle and it did activated drive, but if you stay parked it deactivated again, so changue the VIN using TIS to a 2010 and it worked perfectly. i have done other swaps, and i havent any problems using 07-08 E38 tunes with a 10-09-08 TCM tunes.. sorry if i cant explain myself, but i dont speak english very well, sometimes i dont use the correct words or most of the time

I am running a 2013 Camaro SS LS3/6L80 in my 68 C10 truck. I have a Speartech harness and a ShrifterSix paddle shifter setup. The paddles work great when I'm in M (sport) mode. When I touch on of the paddles it activates the TUTD feature and allows me to paddle shift the transmission. I can even hold the + paddle for 2 seconds and it will take it out of TUTD and and put the tranmission back in sport mode so that the transmission automatically shifts. However, the one feature I haven't been able to get to work is the temporary activation of the paddles in the "D" mode. I know on the 2012+ Camaros/Corvettes, you can press one of the paddle shifters and it will temporarily allow them to work (TUTD) in the D selector position. But, the transmission will eventually go back to shifting the transmission automatically. Any suggestions? Thanks in advance.

[renegade6]

Did you ever figure out how to set up the TU/TD resistors?

[400ss]

Exactly as de corvette a6 diagram using the corvette tune

[renegade6]

Thanks. Trying to figure my system out. I have a converted harness from a 2012 Caprice and there is only one wire going to the transmission for the TU/TD.

[400ss]

Yes.that wire comes fromthe tap up tap down circuit

[renegade6]

Does the switch you used have two or three leads on it? I'm using a Malibu shifter and if I remember correctly, it only has two leads on it.

[400ss]

If the switch has 3 leads it can be used for up and down shift. If it has 2 . Itll be used for up or down

[Turbocorty]

Hi Guys,
Overline Technology make a module that allows TUTD and also displays the correct gear on a display.
I think you can use any TFT display you like also.
https://www.facebook.com/video.php?v=402477019933147&theater

This is also done via CAN Bus.

Cheers

[atlasman]

If the switch has 3 leads it can be used for up and down shift. If it has 2 . Itll be used for up or down

400ss, do you have pix of a shift circuit with the 8.25, 4.42 and 1.5 ohm resitors in it with a rocker spring loaded toggle switch? I appologize im not the best with reading wiring scematics but i can look a picture of an actual unit you have put together and i can build anything i can see a picture of. Is this possible? Thanks so much. reply to atlasman75@yahoo.com

[blindawg]

Can I change the ohms values the TCM needs to see? THAT would be super beneficial.

The truck shifter sends out values of: 6.84, 3.97, and 1.87
Verses the corvette's 8.25, 4.42, and 1.5. If you could make that an option it would help all the guys doing these swaps.

[400ss]

to be honest i think it cant be done on the TCM,, but is fairly simple to do the circuit with the correct resistors,,

[blindawg]

to be honest i think it cant be done on the TCM,, but is fairly simple to do the circuit with the correct resistors,,

I agree, except the truck shifter is set up different than the Vette shifter. I'll try to find a diagram.

For and upshift command it goes through 1 resistor. For a downshift command it goes through 2 resistors, and for the steady state pull up value it goes through 3 resistors. All of which are inside of the shifter and I'm not so sure how easy it will be to get to it to modify it. My shifter should show up this weekend and I will try to take it apart to see if it can be done.

I did find some info from GM that said the steady state should be between 8.11kohms and 8.39kohms. this means it should have the same value as the Vette does for the steady state. The numbers I posted in my first question was from a guy that measured it and posted onto a forum. I guess I should have waited until I got my shifter and tested myself. It may need no adjustment at all.

Thanks for the help 400SS. You seem to always have the answer for the 6L80 questions I have!
Branden

[blindawg]

http://i1168.photobucket.com/albums/r499/watsonbranden/Mobile%20Uploads/2016-01/EFFCADA9-B573-482A-B712-7372D4D1505E_zpsazbk7q4o.png~original (http://s1168.photobucket.com/user/watsonbranden/media/Mobile%20Uploads/2016-01/EFFCADA9-B573-482A-B712-7372D4D1505E_zpsazbk7q4o.png.html)

[400ss]

the way tutd works on that diagram is using body control module,, it will be simpler just to do a corvette A6 flash on the TCM and run the tutd switchs directly to the TCM

[blindawg]

the way tutd works on that diagram is using body control module,, it will be simpler just to do a corvette A6 flash on the TCM and run the tutd switchs directly to the TCM

I agree 100%! And that is what I want to do. BUT, I'm afraid the values per command will be too far off from the Vette values that the TCM won't recognize the command.
Like I said, I should have waited until I got my shifter and tested the values myself before asking my question.

Thanks,
Branden

[400ss]

whats the shifter youll use?

[blindawg]

http://i1168.photobucket.com/albums/r499/watsonbranden/5055934F-9894-4C0F-BDCA-90F809ED41FA_zpsda3ymlqc.png~original (http://s1168.photobucket.com/user/watsonbranden/media/5055934F-9894-4C0F-BDCA-90F809ED41FA_zpsda3ymlqc.png.html)

Factory shifter from 07-13 silverado that had the 6l80 or Allison trans.
part number 15860125

[400ss]

is this in a swap build? whats the PCM and TCM tune from?

[blindawg]

07 Silverado 5.3 with a 4l60 in it now.

I will be putting the 6L80 in it in a month or so, once I get everything lined out.

I'll probably have to put an 08 tune in the ECM and probably an 08-10 Vette Tune in the TCM.

[400ss]

is the newnew body style or the clasic?,,, check wiring diagram of the BCM on the 07 and the one that came with the 6L80, cross refence the pins and check if have the same function, you can probably swap the BCM or check if tech2 can do a software swap on the BCM for a 6L80E BCM, this way you can use that shifter

[blindawg]

Its new body style.

I really WANT to use the Vette method so I don't have to pay for the reflash of the BCM and most likely have to buy a new Gauge Cluster. I'll probably have to end up doing that, but wanted to give this a shot first. I'll post back my findings once the shifter shows up!

Thanks again,
Branden

[rickardss]

400ss - did this work? Were you able to simplify the circuit? I have a floor shifter (caddy / G8) and was hoping to recreate what you have done if it works? Any photos / final wiring diagrams would be a big help.

19347


Been searching alot about this and couldnt get a concrete or complete info on this. So far i found i need the corvette TCM tune. and i find a diagram.

The diagram shows 2 paddles, can i reduce the circuite and leave just one button for upshift and other for downshift like in one of the diagrams a atached.

It shows 3 resistors, 8.25K, 4.42K and 1.5K, do i just ask for a resistor like that? because i seen some resistors are like 1/4W or 1/2W or something like that????

Lets say i finish the circuit, and wired it, and writed the TCM corvette tune. To activate the TUTD function what is needed? just move the shifter from D one step down?? it will be M mode?

If anyone can help i will really apreciate it. i have installed some 6L80E and i would like to be able to use the TUTD thanks

[400ss]

400ss - did this work? Were you able to simplify the circuit? I have a floor shifter (caddy / G8) and was hoping to recreate what you have done if it works? Any photos / final wiring diagrams would be a big help.

19347

yes you can simplify the circuit, yes one step down,(M) mode, 1/4 watt will be ok, try to find the same ohms resistor,, corvette tune and done

[rickardss]

Thanks 400ss.

Do you have experience getting manual shift to work on a floor shifter? As in can I shift gears in M mode using a stock G8 / caddy shifter with the 6l80 just by wiring it up (12v, ground and control wire to pin 7 on trans)? Assuming corvette tune again is done.

[Naf]

I know i am diggin up an old thread, but i am curious to know if i use a 2007+ column stock shifter, PN 15860125, with my stand alone harness, would i be able to use the TUTD and power option in my project vehicle?

I am goin to upgrade the engine, and transmission from the old TBI/4l60e combo to the Gen IV engine w/o VVT / 6L80e transmission.

I had two issues,

1, cruise control, ( may have a fix with eficonnection)
2, TUTD in column shifter for stock like appearance.

Plz let me know about the TUTD shifter