2020–2022 3.0L Duramax LM2 AMDP Support Package

Fits

Note: This is the tuning support package only; click here for the device & tunes. You must already own an EZ-Lynk AutoAgent 3. TCM Tuning is available as an add-on.

AMDP has developed this custom EZ-Lynk tuning package specifically for 2020–2022 LM2 Duramax 1500 trucks. These tunes are designed to improve drivability, throttle response, and overall performance while maintaining factory safety strategies.

You’ll have access to multiple power levels ranging from optimized stock all the way up to a +50 HP performance tune. Whether you want clean, efficient daily driving or a noticeable bump in power, AMDP has a solid option.

We do not support lope tunes or smoke tunes.

• Three power levels to match your driving and performance goals
  
• Improved throttle response to eliminate dead pedal feel
  
• Optional TCM tuning for smoother shifts, better torque delivery, and improved towing performance
  
• Transmission optimization with refined shift points, faster shifts, and improved torque converter lockup
  
• Quick installation using an EZ-Lynk AutoAgent

Level 1 – Optimized Stock (0 HP)
Improves throttle response and drivability while maintaining factory power output. Ideal for daily driving, long commutes, and emissions-conscious setups.

Level 2 – Performance Daily / Tow (+30 HP)
Adds approximately 30 HP and 70 lb-ft of torque. Improves mid-range power, acceleration, and towing performance while retaining factory safety parameters. Fuel economy may improve under light throttle.

Level 3 – Maximum Performance (+50 HP)
Delivers up to 50 HP and 110 lb-ft of torque. Sharper throttle response and stronger power delivery. An S&B cold air intake is recommended. Not advised for heavy towing.

AMDP 4-Week Lynk provides access to compatible tuning for four weeks. Once expired, the tune currently installed remains on the vehicle.

AMDP Lifetime Lynk includes unlimited flashes, basic tune revisions, automatic updates, data logging, and live chat support with AMDP.

Click here for a full comparison

• EZ-Lynk AutoAgent 3
• Can bus plugs are required to be installed
• S&B intake recommended for Level 3

• NON-refresh trucks only (2020–2022)
• 22.5+ refresh trucks with the large center display use the E66 ECM and are not supported
• SUV 3.0L applications are not supported