Climate controls stopped working? Easily replace your unit with this remanufactured Dorman OE FIX HVAC control module that's been fully tested in the USA. This unit has been reprogrammed for specific GMC vehicles, eliminating the need for reprogramming with GM-specific software like SPS (Service Programming System). After installation, the unit is ready to use since our team has configured it to your specific vehicle, making installation quick and easy.