2020-2022 GM / Chevy Duramax 3.0L LM2

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DPF Delete Exhaust | GM/Chevy Duramax LM2 3.0L | 2020-2022

DPF Delete Exhaust | GM/Chevy Duramax LM2 3.0L | 2020-2022

Original price was: $489.Current price is: $415.
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EGR Delete Kit | GM/Chevy Duramax 3.0L LM2 | 2020–2022

EGR Delete Kit | GM/Chevy Duramax 3.0L LM2 | 2020–2022

Original price was: $315.Current price is: $268.
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OBD II Delete Tuning Package | GM/Chevy Duramax LM2 3.0L | 2020-2022

OBD II Delete Tuning Package | GM/Chevy Duramax LM2 3.0L | 2020-2022

From $695 $594
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GM / Chevy Duramax 3.0L LM2 | Full DPF/DEF/EGR Delete Kit | 2020-2022

GM / Chevy Duramax 3.0L LM2 | Full DPF/DEF/EGR Delete Kit | 2020-2022

From $4,055 $3,494
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2020–2022 GM 3.0L LM2 Duramax Delete Kits & Performance Products

This page has every LM2 Duramax delete kit and component we sell for the 2020, 2021, and 2022 Chevy in the Silverado 1500 and GMC Sierra 1500. All four products fit the gm 3.0 diesel with E46 ECM only.

What’s Covered in This Collection

  • Full Delete Kit – Complete DPF, DEF, and EGR removal kit for the 2020–2022 3.0 Duramax LM2. Includes OBD2 flash tuning interface, 6 tuning credits, ECM E46 upgrade and unlock service, complete EGR delete hardware, 3-inch stainless steel CAT & DPF Delete Turbo-Back Exhaust, and CAN BUS Plug Kit. 
  • 3-Inch CAT & DPF Delete Turbo-Back Exhaust – Stainless steel 3-inch Turbo-Back exhaust that replaces from the turbo down to the mid-pipe. Retains the factory muffler and dual exhaust.
  • EGR Delete Kit – EGR valve delete, cooler delete hardware, gaskets, seals, and mounting hardware for the 3.0L Duramax LM2. Sold standalone or included in the full lm2 Duramax delete kit. Addresses the EGR-related carbon buildup that restricts airflow in the intake on this engine. 
  • OBD-II Delete Tuning Package – OBD2 flash tuning interface with LM2 delete tune file custom-built from the customer’s stock calibration. Tuning credits included. Standalone tuning product – no pipes, no EGR hardware.

Key Features and Benefits of the LM2 Duramax Delete Kit

  • Removes common DEF-system-related interruptions.
  • Cleaner intake without EGR carbon buildup.
  • Better drive response from unrestricted Turbo-Back exhaust flow.
  • One of the few 3.0 Duramax delete kit options on the market.

Supported Models

  • 2020–2022 Chevy Silverado 1500 / GMC Sierra 1500 3.0L LM2 Duramax.

Not sure if your 2022 has the E46 or E66 ECM? Call, email, or WhatsApp us with your VIN – we’ll confirm compatibility before you order any duramax upgrades or parts. These kits are for off-road use only. Check your local laws before purchasing.

FAQ

It removes the DPF, DEF, and EGR systems from the 3.0L Duramax - both the hardware and the ECM calibration. The 3-inch Turbo-Back exhaust replaces the restrictive factory DPF and catalytic converter section. The EGR delete stops carbon from recirculating into the intake. The tuning updates the ECM calibration so the engine operates correctly without emissions-related fault codes. Tune levels run from Stock Optimized (near-stock power output, emissions off) to Race (+40HP). No more forced regens, no DEF refills, and cleaner airflow through the intake.

It's compatible with 2020, 2021, and early 2022 Silverado 1500 and Sierra 1500 trucks that have the E46 ECM. Late 2022 models with the E66/Global B ECM and fully digital instrument cluster aren't supported - those use a different ECM architecture that can't be unlocked with this tool. If you're unsure which ECM your truck has, send us your VIN and we'll confirm before you buy.

You'll see better fuel economy because the engine isn't running forced regen cycles anymore. The factory aftertreatment system adds exhaust restriction, especially during active regeneration cycles. Most LM2 owners report noticeable improvement on highway. Short-trip drivers who dealt with constant regens see the biggest difference. The Tow tune is calibrated for efficiency under load.

The exhaust and EGR delete are bolt-on jobs - most owners with jack stands and basic tools can handle those. The tuning side requires more steps: the ECM E46 must be removed from the truck and shipped out for the unlock service before the OBD-II flash can be performed. Plan for about a week of downtime while the ECM is out. Once it's back and unlocked, the tuning flash takes minutes through the OBD-II port. We're available by phone if you need help during any part of the process.