The most important fix for our desert race truck was to add TUTD sport shift mode to the 6L90 in our 1978 Jeep J10 race truck named HONCHO! This will help us keep the engine at the best RPM to have power under the foot when needed. This is the second video I have done on the 6L90 which provides some great links if you are working on your own transmission. I hope you will choose to subscribe and track our progress from Ensenada to La Paz at the Baja 1000.

Link to the HP Tuner forum
https://forum.hptuners.com/showthread...

Instruction Document link on HP Tuner

https://forum.hptuners.com/attachment...

The parts you will need to make the harness.

6L80/90 connector:
https://www.mouser.com/productdetail/...

Cable seal:
https://www.eficonnection.com/home/pr...

8.25k ohm 1% tolerance resistor:
https://www.digikey.com/en/products/d...
4.42k ohm 1% tolerance resistor:
https://www.digikey.com/en/products/d...
1.5k ohm 1% tolerance resistor:
https://www.digikey.com/en/products/d...

My video other video    • Chevy Silverado transmission problems...   may be useful for some beginners attempting a teardown of the 6L80 or 6L90 for the first time. The real pros have made some great videos and the links are below.

   • 6L80 overhaul  

   • 6L80/6L90 transmission ITS NOT LOOKIN...  

   • GM Hydra-Matic 6L80 / 6L90 Power Flow  

   • 6L80/6L90 valve body installation  

   • 6L80/6L90 valve body removal  

Check out or team and honcho build at www.NTDRacing.com

Here is a link for the manual for the 6L80 and 6L90

http://shop.ukrtrans.biz/wp-content/u...

I found these huge snap ring plyers on Ebay.

https://www.ebay.com/itm/324615853724

You will need sockes like these to remove the valve body.

HORUSDY 11 Pc Female E Torx Star Socket Set/Rail, Female External Star Socket Set E4 - E20 Torque Socket Set

https://amzn.to/3fdHFgh


I loved every moment I served in the Air Force, except the times we got the worst news about a friend that would not be coming home. These tragic events instantly left families without a Father or Mother and many times without their primary income source. While the US Military has resources to help families carry on, more needs to be done. This is where organizations like Folds of Honor step up. This amazing foundation provides scholarships to spouses and children of America’s fallen and disabled service members. Please consider a donation to Folds of Honor using the link below.

HONOR THEIR SACRIFICE.
EDUCATE THEIR LEGACY.

https://folds-of-honor-2.snwbll.com/n...


#NTDRacing #FoldsofHonor #6l80