FiTech Go Shift Stand Alone Transmission Control Unit GM MAHLE Original Do not cut the spring

Do not cut the spring pockets any larger than 1

2015-2016 GMC Sierra 3500 HDVehicle Applications: 2015-2016 Chevrolet Silverado 2500 HD

6 strategically designed compartments & pockets

7 in Sleeve

Ergonomic Design and Feel

FiTech Go Shift Stand Alone Transmission Control Unit GM MAHLE Original Do not cut the springProduct Description: Transmission Control Unit 4L60 4L65 4L80 4L85E to FiTech Ultimate EFI FiTech is a manufacture of throttle body style EFI systems. These self tuning EFI systems were designed to be simple and affordable. In addition to complete EFI systems, FiTech also offers fuel system components such as fuel pumps, filters and lines.