2020 - 2022 LM2 3.0L Duramax 1500 | HP Tuners

GM Sierra and Silverado owners 2020-2022 (non interior refresh/picture in the description) equipped with the GM LM2 Duramax 3.0L engines are now available! These trucks are equipped with the GM E46 ECM and GM T93 TCM. To tune either of these controllers we have to unlock the security from them. Once this is completed, they are ready for custom tuning.

What is all needed?

• ECM unlock
• HP Tuners MPVI 3 or 4
• 6 HPT Credits
• Tune file

Unlocking ECM options:

• Send to us to unlock

Power Levels:

• +15HP +45 FT/LBS TQ
• +30HP +70 FT/LBS TQ
• +60HP +110 FT/LBS TQ

IMPORTANT: 

• All vehicles and transmissions require a Windows based computer for the flashing of your vehicle or transmission with your tuning option.
• Vehicle tuning requires an unlocked ECM for flashing of tuning.
• All Dash messages must be gone before tuning.
  • You can do this after unlock
  • Use a hand held tool such as snap on or simlar to reset dpf, scr functions