The Pulsar LT is a new in-line module for 2017-2022 2.8L Duramax Diesel Chevrolet Colorado and GMC Canyon that offers complete adjustability of many features, all from your steering wheel controls. Without modifying your truck's ECM, Pulsar LT offers you the ability to adjust throttle response, manual DPF regen, trans relearn, calibrate tire size, gear ratio, TPMS, and the ability to clear engine codes. Even adjustable high idle. It connects directly to the vehicle computer system, making installation a breeze and leaving your factory warranty intact. *When physically changing ring and pinion gears in the late model GM trucks, the factory cruise control will be disabled. While the Pulsar will allow you to recalibrate the speedometer for that gear change, it will not re-activate the disabled cruise control system or correct any codes that are set. GM has this feature laced into the calibration files and would require full ECM/TCM tuning to re-enable cruise control or to correct any other codes or drivability concerns