Tow Haul?

[homeless]

Is putting your rig in Tow Haul the same as an older rig with Overdrive and dropping out of overdrive?

[A32Deuce]

No. That causes the computer to use a different program for shiftion the tyranny. Works for level ground and up and down hill. Should be a description of operation in the owners Manuel.

[twinboat]

What A32Deuce said.

[Triangle Drifter]

Very different. The whole shift pattern is different in the TOW mode. Going up the tranny shifts later. Coming down simply touching the brakes shifts the tranny down a gear. With subtle inputs on the throttle the driver can almost make it behave like manual shift making it downshift earlier when approaching a hill.

[powercat_ras]

Tow Haul when On also causes the transmission to down shift if you depress the brake pedal for 1 second. Depressing accelerator will cause the ECM to shift back to the "normal" gear.