Fleece Allison TapShifter (FPE-TAPSHIFTER35) for 2003-2005 Duramax LB7 / LLY
$418.95
The Fleece Allison TapShifter (FPE-TAPSHIFTER35) is a performance upgrade for 2003–2005 GM Duramax trucks with LB7 or LLY engines and Allison 1000 transmissions. It adds a tap-style shifter for manual gear control, improving drivability and engine braking—especially useful for towing and steep terrain. The kit includes a shift lever, control module, and wiring, and integrates smoothly with factory systems for an OEM-like installation. It enhances both daily driving and heavy-duty performance.
The Fleece Allison TapShifter (FPE-TAPSHIFTER35) is a performance upgrade designed specifically for 2003–2005 GM Duramax diesel trucks equipped with the LB7 or LLY engine and the Allison 1000 transmission. This innovative product allows drivers to take full control of gear selection via a tap-style shifter, similar to the factory-style found in newer GM trucks. By enabling manual gear changes, the TapShifter enhances drivability, especially when towing, hill climbing, or descending steep grades, giving users more command over engine braking and performance. The kit includes a new shift lever, control module, and necessary wiring, and it integrates seamlessly with the truck’s factory systems for a clean, OEM-like installation. Whether for daily driving or heavy-duty applications, the Fleece TapShifter significantly improves the driving experience for Duramax owners.
| Weight | 2 lbs |
|---|---|
| Dimensions | 12 × 6 × 3 in |
Fitment
- 2003 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
- 2004 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
- 2004.5 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
- 2005 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
Features
• Easy Plug & Play Installation
• Limits Up-Shifts
• Overdrive Disable
• Command Downshifts
• Decrease Gear Hunting
Installation
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!
Warning
1) Not compatible with 6-speed conversions.
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