# Fleece Performance 01-02 GM Duramax 6.6L LB7 Allison TapShifter

The Fleece Performance TapShifter allows you to shift your 2001-2005 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 2001-2005 trucks with an Allison Transmission. Installation: The TapShifter installs using OEM high quality connectors for a completely plug and play installation in less than 30 minutes. 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! Features: Easy Plug & Play Installation Limits Up-Shifts Overdrive Disable Command Downshifts Decrease Gear Hunting NOTE: 01-02 models will require TCM Re-Flash to enable overdrive lock-out and proper function.

-   Easy Plug & Play Installation
-   Decrease Gear Hunting
-   Command Downshifts
-   Overdrive Disable
-   Limits Up-Shifts

This Part Fits:

Year

Make

Model

Submodel

2001-2002

Chevrolet

Silverado 2500 HD

Base

2001-2002

Chevrolet

Silverado 2500 HD

LS

2001-2002

Chevrolet

Silverado 2500 HD

LT

2001-2002

Chevrolet

Silverado 3500

Base

2001-2002

Chevrolet

Silverado 3500

LS

2001-2002

Chevrolet

Silverado 3500

LT

2002

GMC

Sierra 2500 HD

Base

2001-2002

GMC

Sierra 2500 HD

SL

2001-2002

GMC

Sierra 2500 HD

SLE

2001-2002

GMC

Sierra 2500 HD

SLT

2002

GMC

Sierra 3500

Base

2001-2002

GMC

Sierra 3500

SL

2001-2002

GMC

Sierra 3500

SLE

2001-2002

GMC

Sierra 3500

SLT

## Details

- **Price:** 573.36 CAD
- **Vendor:** Fleece Performance
- **Type:** Shifters

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 573.36 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- Photo - Primary
- User 1
- User 9
- User 2
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/fleece-performance-01-02-gm-duramax-6-6l-lb7-allison-tapshifter)
> Updated: 2026-06-27