This transmission tuning is designed specifically for 2017 - 2023 GMC vehicles with the 6.6L Duramax L5P engine. TCM Tuning boosts line pressure, applying more force to clutch packs and preventing slippage. This helps avoid excessive early wear on clutch disks. It also adjusts shifting points to match the new tuning, enhancing overall driveability. Note: You'll need HP Tuners MPVI3, an Unlocked TCM, and 4 Tuning Credits to load the tuning. 2017 - 2019 trucks require an unlocked T87 TCM, while 2020+ trucks need an unlocked T93 TCM.

Using this transmission tuning is a great way to enhance your vehicle's performance. First, make sure you have all the necessary equipment: HP Tuners MPVI3, an unlocked TCM, and 4 tuning credits. For 2017 - 2019 trucks, ensure you have an unlocked T87 TCM, and for 2020+ trucks, an unlocked T93 TCM. Then, follow the instructions that come with the HP Tuners MPVI3 to load the tuning. As for maintenance, there's no special routine for the tuning itself. But keep your vehicle well - maintained as usual, like regular oil changes and checking the transmission fluid. If you have any issues during the tuning process or while using the vehicle after tuning, don't hesitate to contact the support team.