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Tow/Haul vs. Normal Mode – How does the Overdrive Disable and Tow/Haul switch work on my 2003-2005 pick-up?

April 26, 2017disable Haul mode normal OverDrive Switch vs

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Tow/Haul vs. Normal Mode – How does the Overdrive Disable and Tow/Haul switch work on my 2003-2005 pick-up?

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A. If your vehicle has an Allison Transmission you may have the Overdrive Disable feature. The Overdrive Disable feature prevents the transmission from shifting into fifth (5) gear. The selector button is located on the end of the column shift lever. You can turn Overdrive Disable on and off by pressing and holding the button at the end of the column shift lever until the indicator light, on the instrument panel, illuminates. If your vehicle has Tow/Haul, tap the button once to enable or disable Tow/Haul. If you are towing heavy loads up steep inclines you may want to use both features simultaneously: • Tap the button once to enable Tow/Haul then press and hold the button to enable Overdrive Disable.