Amazon.com: 4L80e stand alone controller full manual shift "auto" lock up : Automotive
NCR 4L80E stand alone controller manual shift conversion for 4l80e transmission | eBay
MicroSquirt CAN Transmission Controller with 4L80E Subharness
Stand Alone Controller 4L80E Full Manual Shift Automatic For GM with 4L80E Trans | eBay
AMPEFI Transmission Controller with 4L80E Subharness
Chevrolet Performance Parts - 19332780 - CPP Automatic Transmission Controller Kit - For GM 4L80E,4L85E includes controller, Harness, Software, USB cable
4L80E Stand Alone Controller Full Manual er Accessories Replacement - Walmart.com