2022-2023 Chevy Silverado GMC Sierra 2500HD 3500HD 6.6L Duramax ECM ECU OEM 12723810 29K Miles

🔧 Part #: 590-11887
📦 Stock #: MM1318

Genuine OEM Engine Control Module (ECM/ECU) removed from a 2022–2023 Chevrolet Silverado HD / GMC Sierra HD with 29,765 original miles. This factory engine computer has been professionally inspected and tested prior to removal to ensure proper functionality. It is an original GM OEM component and is ready for installation.

Designed for 6.6L Duramax diesel applications. The module is mounted in the left-hand (LH) front engine compartment.

Vehicle Fitment

Chevrolet

• 2022–2023 Silverado 2500HD – 6.6L Duramax Diesel
• 2022–2023 Silverado 3500HD – 6.6L Duramax Diesel

GMC

• 2022–2023 Sierra 2500HD – 6.6L Duramax Diesel
• 2023 Sierra 3500HD – 6.6L Duramax Diesel
• 2022 Sierra Denali 2500HD – 6.6L Duramax Diesel, ID 12723810
• 2023 Sierra Denali 2500HD – 6.6L Duramax Diesel
• 2022–2023 Sierra Denali 3500HD – 6.6L Duramax Diesel

Module Location: Left-Hand (LH) Front Engine Compartment

OEM Part Number

• 12723810

Interchange / ID Number

• 12723810

Features

• Genuine GM OEM Engine Control Module
• Fits select 2022–2023 Chevrolet Silverado HD and GMC Sierra HD models
• Designed for 6.6L Duramax diesel engines
• Removed from a vehicle with 29,765 original miles
• Factory tested and inspected before removal
• Clean and ready for installation
• Direct OEM replacement when part numbers match

Important Information

• Please verify that your original part number matches 12723810 before purchasing.
• Fits only the vehicle applications listed above equipped with the 6.6L Duramax diesel engine.
• This module may require programming, VIN relearn, immobilizer setup, and calibration updates before installation.
• Professional installation with GM-compatible programming equipment is strongly recommended.

Package Includes

• 1 × Genuine OEM Engine Control Module (ECM/ECU) – Part #12723810

Need help confirming compatibility? Send us your VIN and original part number, and we'll be happy to verify fitment before you purchase.