Fits: 2003 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel 

The Fleece TapShifter allows you to shift your 2003-2005 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.

TapShifter Operation is very straight forward. To downshift you'll simply depress the "-" button on the shifter. To upshift you'll 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

Includes: 

• GM/Allison TapShifter

Notes: 

• This product is meant to be used with Duramax trucks outfitted with Allison transmissions. 

Install Instructions