2020–2022 Chevy GMC 3.0L Duramax LM2 Complete Delete Kit | E46 ECM | GDP Commander Tuner

2020–2022 Chevy / GMC LM2 3.0L Duramax (E46 ECM Only) | Complete Delete Kit

IMPORTANT – READ BEFORE PURCHASE

• E46 ECM ONLY
• Will NOT work with E66 ECM
• E66 ECMs are generally found on 2022+ refresh trucks, but some earlier trucks may also have E66
• You MUST verify your ECM before ordering
• If you have an E66 ECM, please see our ECM Send-In Option

⚠️ ATTENTION – NEW RELEASE PRODUCT

• All tuning and setup must be completed with GDP Tech Support
• No ECM send-in required – the GDP Commander unlocks and tunes the E46 ECM directly

What’s Included

• GDP Commander Tuner
• 16 Tuning Credits (Included)
• GDP Performance Tune options
  • Level 1
  • Level 2
  • Level 3
• LM2 CANbus Plugs
• LM2 EGR Delete Kit
• FLO-PRO DPF Delete Pipe

Optional Add-On:

• S&B Cold Air Intake
  (Must be selected via menu options – not included by default)

Performance Overview

Unlock the full potential of your Chevrolet Silverado or GMC Sierra 3.0L Duramax (LM2) with a complete delete solution engineered for maximum performance, efficiency, and reliability.

Key Benefits

• Increased horsepower and torque
• Faster throttle response and improved acceleration
• Reduced exhaust backpressure
• Lower exhaust gas temperatures (EGTs)
• Cleaner combustion and improved engine efficiency
• Enhanced fuel economy potential

By removing restrictive factory emissions components and recalibrating engine parameters, this system delivers smoother power delivery and a more responsive driving experience across the entire RPM range.

LM2 3.0L Duramax EGR Delete Kit

Kit Includes

• (1) High-quality 4-ply silicone coolant hose
• (2) Silicone caps
• (1) Ground cable
• (2) CNC blocker plates (EGR valve & cooler)
• (1) Intake plug

Functionality

This kit allows complete removal of:

• EGR cooler
• EGR valve
• Exhaust valve
• EGR cooler pipe

Benefits

• Eliminates carbon buildup caused by exhaust gas recirculation
• Improves airflow and combustion efficiency
• Reduces long-term reliability issues associated with EGR systems
• Promotes smoother engine operation and longevity

Custom 3.0L Duramax DPF Delete Pipe

• Constructed from 16-gauge aluminized steel
• Precision-fit with machined flanges
• Lap-joint style clamps for secure installation
• Improves exhaust flow and reduces restriction
• Retains the factory muffler
• Produces a deeper, authoritative exhaust tone

Installation Notes

• Professional installation is strongly recommended
• Removal of multiple OEM engine bay and exhaust components is required

Use Disclaimer

For off-road, closed-course, or race-use only. Not legal for on-road use.