How to service the Engine Control Module (ECM) on Chevrolet Express 2500?

Service of the Engine Control Module (ECM) requires a new part interchange or eeprom programming. Verify that the new ecm matches the requirements before you remove the faulty ecm to install the service ecm model. Power losses must be implemented through a complete ignition shut-off during the handling of control module connectors as well as power disconnect and reconnect operations to shield internal module damage. Keeping the metal case of the control module away from battery voltage ensures its protection from damage. Electrostatic discharge damage can be prevented by avoiding touch of connector pins or circuit board soldered components and cleaning all control module connector surfaces. Check that control module connector gaskets are properly installed to block contaminates from entering the module area. A replacement control module requires programming and recording engine oil life remains or else the system will set the oil to be changed at 5,000 km (3,000 mi) from the last change. Operating a scan tool enables you to retrieve the remaining engine oil life percentage which should then be documented. Disconnect the negative Battery Cable as well as the engine wiring harness electrical connectors which belong to the ecm. To detach the ecm from the bracket the user needs to release tabs on the ecm bracket. To install the system position the ecm into its bracket so the ecm bracket tabs can completely connect. Reestablish the connection between the ecm and engine wiring harness electric connectors and the negative Battery Cable. New ecm installation requires ecm programming followed by the use of a scan tool for setting the engine oil life.

OEM Chevrolet Express 2500 Engine Control Module

Engine Control Computer

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23 Engine Control Modules found

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Chevrolet Express 2500 ECM
Part Number: 12703872
$204.82 MSRP: $414.92
You Save: $210.10 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module; Module, Emission Control System
- Replaces: 12686430, 12692070
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2020 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS
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Chevrolet Express 2500 ECM
Part Number: 12625455
$232.61 MSRP: $424.70
You Save: $192.09 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Engine Control (W/2ND Mpu); Engine Control Module; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 PCM
Part Number: 12633238
$245.01 MSRP: $496.56
You Save: $251.55 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2015 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX
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Chevrolet Express 2500 ECM
Part Number: 12692200
$186.20 MSRP: $377.12
You Save: $190.92 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu) E78 Service ECM 2Byte; Engine Control Module; Module, Emission Control System
- Replaces: 12668866, 12668991, 12643636
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 ECM
Part Number: 12704475
$212.59 MSRP: $430.72
You Save: $218.13 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Module, Emission Control System
- Replaces: 12692069, 12680656, 12686383
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS
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Chevrolet Express 2500 ECM
Part Number: 12692201
$151.38 MSRP: $276.36
You Save: $124.98 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu) E78 Service No-Start; Engine Control Module; Module, Emission Control System
- Replaces: 12668986
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2020 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 ECM
Part Number: 12721353
$181.39 MSRP: $325.36
You Save: $143.97 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/ 2ND Mpu) & (W/O C; Module, Emission Control System
- Replaces: 55512265
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2022 Chevrolet Express 2500 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Express 2500 ECM
Part Number: 12721350
$211.21 MSRP: $378.87
You Save: $167.66 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Module, Emission Control System
- Replaces: 24000463, 55485591
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Chevrolet Express 2500 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Express 2500 ECM
Part Number: 12602801
$534.19 MSRP: $962.30
You Save: $428.11 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Powertrain Control (P59)
- Replaced by: 89017749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
View related parts
Chevrolet Express 2500 PCM
Part Number: 12612384
$261.01 MSRP: $488.26
You Save: $227.25 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L GAS
View related parts
Chevrolet Express 2500 ECM
Part Number: 16216588
$299.95 MSRP: $548.16
You Save: $248.21 (46%)
ADD TO CART
Product Specifications
- Other Name: Module, PCM (Remanufacture) Requires Reprogramming; Engine Control Module; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Express 2500 | Base, LS | 8 Cyl 6.5 L DIESEL
View related parts
Chevrolet Express 2500 PCM
Part Number: 12200411
$244.45 MSRP: $434.84
You Save: $190.39 (44%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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Chevrolet Express 2500 ECM
Part Number: 12652526
$1011.74 MSRP: $1798.80
You Save: $787.06 (44%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (W/O Calibration); Engine Control Module; Module, Emission Control System
- Replaces: 12618516
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2012 Chevrolet Express 2500 | Base | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Express 2500 Control Module
Part Number: 16229684
Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; PCM; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
View related parts
Chevrolet Express 2500 ECM
Part Number: 19260753
Product Specifications
- Other Name: Module Assembly, Engine Control; Engine Control Module; Module, Emission Control System
- Replaces: 12606126
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Express 2500 ECM
Part Number: 12648344
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012 Chevrolet Express 2500 | Base | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Express 2500 ECM
Part Number: 19260758
Product Specifications
- Other Name: Module Assembly, Engine Control; Engine Control Module; Module, Emission Control System
- Replaces: 12609441
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Express 2500 | Base | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Express 2500 PCM
Part Number: 16263494
$341.63 MSRP: $610.42
You Save: $268.79 (45%)
Product Specifications
- Other Name: Module, Emission Control System; Engine Control Module; ECM
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2002 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
View related parts
Chevrolet Express 2500 Control Module
Part Number: 9366810
$266.44 MSRP: $470.38
You Save: $203.94 (44%)
Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; PCM; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
View related parts
Chevrolet Express 2500 PCM
Part Number: 16244210
Product Specifications
- Other Name: Module, Vehicle Control; Engine Control Module; ECM; Module, Emission Control System
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS

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Chevrolet Express 2500 Engine Control Module

Our website offers an extensive catalog of genuine Chevrolet Express 2500 Engine Control Module at unbeatable prices. Every OEM Chevrolet Express 2500 Engine Control Module comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Express 2500 Engine Control Module Parts Questions & Experts Answers

PCM
12612384
Q: How to service the Engine Control Module (ECM) on Chevrolet Express 2500?
A: Service of the Engine Control Module (ECM) requires a new part interchange or eeprom programming. Verify that the new ecm matches the requirements before you remove the faulty ecm to install the service ecm model. Power losses must be implemented through a complete ignition shut-off during the handling of control module connectors as well as power disconnect and reconnect operations to shield internal module damage. Keeping the metal case of the control module away from battery voltage ensures its protection from damage. Electrostatic discharge damage can be prevented by avoiding touch of connector pins or circuit board soldered components and cleaning all control module connector surfaces. Check that control module connector gaskets are properly installed to block contaminates from entering the module area. A replacement control module requires programming and recording engine oil life remains or else the system will set the oil to be changed at 5,000 km (3,000 mi) from the last change. Operating a scan tool enables you to retrieve the remaining engine oil life percentage which should then be documented. Disconnect the negative Battery Cable as well as the engine wiring harness electrical connectors which belong to the ecm. To detach the ecm from the bracket the user needs to release tabs on the ecm bracket. To install the system position the ecm into its bracket so the ecm bracket tabs can completely connect. Reestablish the connection between the ecm and engine wiring harness electric connectors and the negative Battery Cable. New ecm installation requires ecm programming followed by the use of a scan tool for setting the engine oil life.