2001-2005 Duramax 6.6L LB7 / LLY Allison TapShifter - Fleece Performance

The Fleece Performance TapShifter allows you to shift your 2003-2005 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 2003-2005 pickups with an Allison Transmission.
 
Operation
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!
 
Features
• Easy Plug & Play Installation
• Limits Up-Shifts
• Overdrive Disable
• Command Downshifts
• Decrease Gear Hunting
 
Application Notes
1) Not compatible with 6-speed conversions.
2) Model years 2001-2002 require a TCM Re-Flash to enable the overdrive lock-out and ensure proper function. Refer to GM Technical Service Bulletin 02-07-30-051. Contact your local Chevrolet dealer for reflash and update if required.