Bebop
Well-known member
- Joined
- May 26, 2020
- Member Number
- 1458
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i too wish there was a better way to select 4th. I suspect the PO of my truck had a tune put in, but in tow haul, mine won’t grab OD til like 70 mph , so setting the cruise at 68 works for that.
You could probably go back in the ECU with HPTuners and modify the shift points if you wanted to.
I would love to have the factory OD Off button installed and the TCU flashed as mentioned on Chevrolet tsb 02-07-30-051A
Chevrolet Workshop Service and Repair Manuals > C 2500 Truck 2WD V8-8.1L VIN G (2002) > Transmission and Drivetrain | Sensors and Switches - Transmission and Drivetrain | Sensors and Switches - A/T | Overdrive Switch, A/T | Component Information | Te
C 2500 Truck 2WD V8-8.1L VIN G (2002) > Chevrolet Workshop Service and Repair Manuals > Transmission and Drivetrain | Sensors and Switches - Transmission and Drivetrain | Sensors and Switches - A/T | Overdrive Switch, A/T | Component Information | Technical Service Bulletins | All Technical...
workshop-manuals.com
Found this very detailed write-up too:
OD LOCKOUT INSTALLATION INSTRUCTIONS
But I still need the TCU flashed and can't find any infos on that.