Tow haul mode

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May 3rd, 2017
cyipher

Tow haul mode

Can the scanner be used to tell if the transmission is in tow haul mode? trying to diag if its the switch on the shifter or a bulb issue in the dash.

Thanks
Kyle
May 3rd, 2017
Move'n Up

As long as that's a PID that can be viewed.
May 3rd, 2017
Chavez91

Quote:

Originally Posted by cyipher

Can the scanner be used to tell if the transmission is in tow haul mode? trying to diag if its the switch on the shifter or a bulb issue in the dash.

Thanks
Kyle

IIRC, Log 'Transmission State 07'

There should be one called Trailering/Hauling Shift Pattern

Another that might work is 'Transmission State 08'

Secondary Shift Schedule (input)

I dont remember exactly, but atleast one of those should trigger with the tow haul button.
May 18th, 2017
THEFERMANATOR

Quote:

Originally Posted by Chavez91

IIRC, Log 'Transmission State 07'

There should be one called Trailering/Hauling Shift Pattern

Another that might work is 'Transmission State 08'

Secondary Shift Schedule (input)

I dont remember exactly, but atleast one of those should trigger with the tow haul button.

Theres actually 2 pids that change when in tow/haul mode. I don't remember which one it was, I just know I logged all of the transmissions state pid's, and there was 2 that changed when it actually went into tow/haul mode. I found this out after I ran a TCM from a tuner who said he put tow/haul on a toggle switch for me. It changed the secondary shift schedule pid, but not another one, and it never left normal shift mode other than it changed to a different a adapt set when the toggle switch was on. Wish I could remember more, but it's been almost 8 years now since I was trying to figure that out.