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.
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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.
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