my tow / haul switch does not work on 2001 Chevrolet Silverado 2500 HD

is this a switch in the gearshift handle or internal within the transmission??

The tow/haul is located in the gearshift handle and sends a signal to the powertrain control module on your 2001 Chevrolet Silverado.
4 answers
the tilt colum breaks the wires when you move it up or down, we went in and lenghting the wies 2 inches
the gearshift handle
in the gearshift handle