Performance TapShifter allows you to shift your 2001-2005
GM Allison Transmission with the touch of a button just like
the 2006 and newer trucks. Perfect for towing, drag racing,
daily driving and everything in-between, the TapShifter installs
in no time and provides factory-like operation, functionality
and styling. The TapShifter can be used in the gas or diesel
2001-2005 trucks with an Allison Transmission.
The TapShifter installs using OEM high quality connectors
for a completely plug and play installation in less than 30
TapShifter Operation is very straight forward. To downshift
depress the "-" button on the shifter. To upshift
press the "+" button. The TapShifter will allow
you to select a range with the shift lever and then tap up
and down without worry of tapping to a higher range than selected.
This feature is great for sled pullers who do not want to
shift to 4th gear on the track!
01-02 models will require TCM Re-Flash to enable overdrive
lock-out and proper function.