Commander 4WD V8-4.7L VIN N (2006)
Overdrive Switch: Description and Operation
The tow/haul overdrive OFF (control) switch is located in the lower portion of the center instrument panel switch cluster. The switch is a momentary
contact device that signals the PCM to toggle current status of the overdrive function.
At key-on, overdrive operation is allowed. Pressing the switch once causes the tow/haul overdrive OFF mode to be entered and the Tow/Haul lamp to
be illuminated. Pressing the switch a second time causes normal overdrive operation to be restored and the tow/haul lamp to be turned off. The
tow/haul overdrive OFF mode defaults to ON after the ignition switch is cycled OFF and ON. The normal position for the control switch is the ON
position. The switch must be in this position to energize the solenoid and allow a 3-4 upshift. The control switch indicator light illuminates only when
the tow/haul overdrive switch is turned to the OFF position, or when illuminated by the transmission control module.