Fleece Performance for GM Allison Transmission

The Fleece Performance TapShifter is an electronic transmission shift controller (tap shifter) for GM trucks equipped with an Allison automatic transmission. It lets you select gears manually with the push of a button, so you get the same tap-shift operation found on newer factory-equipped trucks.

Key Features:

• Manual gear selection: Plus and minus buttons let you upshift and downshift on demand.
• Plug-and-play installation: OEM-quality connectors let it install without cutting or splicing, typically in under 30 minutes.
• Factory-like operation and styling: It works with the stock shifter and is designed to look and feel like original equipment.
• Range-aware control: The controller follows your selected shift lever position, which helps prevent unwanted upshifts beyond the chosen range.
• Useful for towing and hauling: Holding a gear gives you better control on grades and under load, and it reduces gear hunting.
• Suited to many uses: It works for towing, drag racing and daily driving.
• Warranty: Fleece Performance backs it with a 1-year limited parts warranty.

Fleece Performance Engineering is known for diesel performance and transmission control products. The TapShifter line gives Allison-equipped truck owners more driver involvement and control over their transmission.