Product Description
Gain factory-style +/- gear control on your 2001–2002 LB7 with the FLEECE FPE-TAPSHIFTER12. This plug-and-play kit adds fingertip shifting to your 5-speed Allison so you can hold gears on grades, manage engine braking, and drive with confidence—whether towing, daily driving, or having fun on the weekend.
Why choose the Fleece TapShifter
- Factory-like operation and ergonomics with intuitive +/- buttons
- Plug-and-play harnessing with OE-quality connectors—clean install
- Improved control for towing, engine braking, and performance driving
- Backed by Fleece Performance Engineering for durability and support
Fitment
Vehicles: 2001–2002 GM 2500/3500 equipped with 6.6L Duramax LB7 and Allison 1000 (5-speed).
Transmission: Allison 1000 (5-speed).
Fuel: Diesel (LB7 Duramax).
Cross-Reference / Related Fleece Items (CPP Diesel)
- FLEECE FPE-TAPSHIFTER35 (2003–2005 GM/Allison)
- FLEECE FPE-TAPSHIFTER-KDTK (Kodiak/TopKick 5-speed)
- FLEECE FPE-HAR-GM-NSBU-0104 (NSBU Pigtails 2001–2004)
- FLEECE FPE-HAR-GM-NSBU-0405 (NSBU Pigtail 2004.5–2005)
It enables column-mounted +/- gear selection so you can upshift/downshift your 5-speed Allison like later factory trucks—ideal for towing and grade control.
Is the install truly plug-and-play?
Yes. The harness uses OEM-quality connectors for a clean, reversible install—no cutting required.
Do I need custom TCM tuning?
No tuning is required for basic operation. The TapShifter adds gear-selection control while retaining factory strategies.
Will this work on 2003–2005 trucks?
Use the FPE-TAPSHIFTER35 for those model years.
Specifications for FLEECE FPE-TAPSHIFTER12
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-TAPSHIFTER12 |
| UPC | 635909310341 |
| GTIN | 00635909310341 |
| Compatibility | 2001–2002 GM 2500/3500 with Duramax LB7 & Allison 1000 (5-speed) |
| Cross Reference | FPE-TAPSHIFTER35; FPE-TAPSHIFTER-KDTK; FPE-HAR-GM-NSBU-0104; FPE-HAR-GM-NSBU-0405 |
| E-codes | Not applicable |
| Shipping Method | Standard ground (small parcel) |
| Package Dimensions / Weight | ~2 lb ship weight (typical) |
| Country of Origin | USA (as commonly listed) |
| Prop 65 | Cancer and Reproductive Harm – www.P65Warnings.ca.gov |