12686363 Genuine GM Engine Control Module For Silverado Sierra 6.6L Diesel

Name: 12686363 Genuine GM Engine Control Module For Silverado Sierra 6.6L Diesel
Brand: GM
SKU: 12686363
Price: 765.00 USD
Availability: InStock

P/N: 12686363 Manufactured by: GM

$765.00 - $765.00

$765.00

$765.00 - $765.00

$765.00

1 in Stock

Condition: New

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Description

The 12686363 is a genuine GM engine control module intended for select Chevrolet Silverado HD and GMC Sierra HD trucks with the 6.6L V8 diesel engine. It handles electronic powertrain control by interpreting engine operating signals and managing designated functions within the factory diesel engine and emissions systems.

Vehicle Compatibility

Year	Vehicle	Engine	Trims
2017	Chevrolet Silverado 2500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2017	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2017	GMC Sierra 2500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2017	GMC Sierra 3500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2018	Chevrolet Silverado 2500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2018	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2018	GMC Sierra 2500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2018	GMC Sierra 3500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2019	Chevrolet Silverado 2500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2019	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2019	GMC Sierra 2500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2019	GMC Sierra 3500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT
2020	Chevrolet Silverado 2500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2020	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2020	GMC Sierra 2500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT, AT4
2020	GMC Sierra 3500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT, AT4
2021	Chevrolet Silverado 2500 HD	6.6L V8 Diesel	Custom, High Country, LT, LTZ, WT
2021	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT
2021	GMC Sierra 2500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT, AT4
2021	GMC Sierra 3500 HD	6.6L V8 Diesel	Base, Denali, SLE, SLT, AT4
2022	Chevrolet Silverado 3500 HD	6.6L V8 Diesel	High Country, LT, LTZ, WT

General Specifications

Condition	New
Part Number	12686363
Brand	GM
Part Type	Engine Control Module
Years	2017–2022
Vehicle	Chevrolet Silverado 2500 HD, Silverado 3500 HD; GMC Sierra 2500 HD, Sierra 3500 HD
Engine Compatibility	6.6L V8 Diesel
Control System	Engine Electronic Management
Emissions System	Electronic Emission Control
Dimensions	3.0 × 13.2 × 12.6 in
Weight	4.45 lbs

Product Features

The 12686363 genuine GM engine control module is configured for the specified heavy-duty diesel powertrain and provides these electronic functions:

Monitors engine sensor inputs to determine the appropriate electronic control responses
Manages designated diesel powertrain functions according to factory engine calibration settings
Processes operating information used by the vehicle's electronic emissions management system
Communicates with related control modules through the original GM vehicle network
Supports coordinated engine operation under different driving loads and operating conditions
Designed for compatible Chevrolet Silverado and GMC Sierra heavy-duty diesel applications
Uses the specified electronic control configuration for the corresponding 6.6L engine
Integrates engine management commands and emissions-related functions within one electronic controller

Application Notes

The 12686363 is intended for select Chevrolet Silverado 2500 HD and 3500 HD, as well as GMC Sierra 2500 HD and 3500 HD trucks equipped with the 6.6L V8 diesel engine. Installation requires matching the original engine control module configuration and completing any applicable GM programming, calibration, or electronic system setup procedures.

Always confirm the factory ECM identification, diesel engine specifications, vehicle electronic system compatibility, and required programming or calibration procedures before installation.