Fleece FPE-TAPSHIFTER35 Allison Tapshifter | 2003-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features: - Easy Plug & Play Installation - Limits Up-Shifts - Overdrive Disable - Command Downshifts - Decrease Gear Hunting 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! Vehicle Fitments: - 2003-2004 Chevrolet Silverado 2500HD 6.6L Duramax LB7 with Allison Transmission - 2003-2004 Chevrolet Silverado 3500HD 6.6L Duramax LB7 with Allison Transmission - 2003-2004 GMC Sierra 2500HD 6.6L Duramax LB7 with Allison Transmission - 2003-2004 GMC Sierra 3500HD 6.6L Duramax LB7 with Allison Transmission - 2004.5-2005 Chevrolet Silverado 2500HD 6.6L Duramax LLY with Allison Transmission - 2004.5-2005 Chevrolet Silverado 3500HD 6.6L Duramax LLY with Allison Transmission - 2004.5-2005 GMC Sierra 2500HD 6.6L Duramax LLY with Allison Transmission - 2004.5-2005 GMC Sierra 3500HD 6.6L Duramax LLY with Allison Transmission