The 4L60E transmission is designed for 380 horsepower. It uses a complete system correction kit. It uses an aluminum 1-2 accumulator piston and is also computer-controlled. The engine is also equipped with a torque converter that has a built-in braking function. The four-speed, automatic transmission features oversized PR valves. It has two shift solenoids. It is easy to operate and does not require additional components or upgrades.
The 4L60E transmission is an upgrade of the previous model, which had a two-piece case. In 2000s, the 4L60E was paired with a 6.0 Vortec. The transmission also featured five pinions and seven clutches. A stand-alone controller is required if the vehicle has a manual transmission. The 4L60E has four bolts connecting the tail shaft to the gearbox.