How to replace the Engine Control Module (ECM) on Chevrolet Cobalt?

Starting the procedure requires ignition shutdown to stop any potential internal module damage while servicing connectors and power lines. The metal case should never come into contact with battery voltage because this leads to damage. Sustain proper handling of the connector pins and soldered components to defend against electrostatic discharge while clearing all dirt from the control module connector faces. Checking control module connector gaskets confirms their correct position is crucial to stop external materials from entering the system. Prior to installing the new module employees need to obtain engine oil life information from a scan tool because otherwise the replacement module will initialize itself to 100% and require an oil change at 5000km (3,000mi) from the last change. The procedure starts with disconnecting the negative Battery Cable followed by Engine Control Module cover removal and seperating the body wiring harness and engine wiring harness electrical connectors from the ecm. Performing steps enables the ecm to detach from underhood junction block bracket through releasing its retaining tab. When installing the ecm users must place it on the underhood junction block bracket before they reconnect the engine wiring harness, small ecm harness connectors and negative Battery Cable and body wiring harness connector. Completion of the procedure requires installation of Engine Control Module cover followed by ecm programming.

OEM Chevrolet Cobalt Engine Control Module

Engine Control Computer

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Chevrolet Cobalt PCM Part Number: 12678511
$265.60 MSRP: $538.40
You Save: $272.80 (51%)
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Product Specifications
- Other Name: Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module; ECM; Module, Emission Control System
- Replaces: 12636660, 12607096
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Cobalt | SS | 4 Cyl 2.4 L GAS
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Chevrolet Cobalt Knock Sensor Part Number: 12612397
$316.33 MSRP: $642.48
You Save: $326.15 (51%)
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Product Specifications
- Other Name: Module Assembly, Engine Control (W/2ND Mpu); Engine Control Module; ECM; Module, Emission Control System
- Replaces: 12597125
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 Chevrolet Cobalt | Base, LS, LT, LTZ, Sport, SS | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS, 4 Cyl 2.4 L GAS
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Chevrolet Cobalt ECM Part Number: 12623326
$352.93 MSRP: $638.77
You Save: $285.84 (45%)
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Engine Control (E69); Engine Control Module; Module, Emission Control System
- Replaces: 12614967
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Chevrolet Cobalt | SS | 4 Cyl 2.0 L GAS

Chevrolet Cobalt Engine Control Module

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The Chevrolet Cobalt ECM or Engine Control Module is widely acclaimed for its durability and efficiency outperforming the vehicle's engine and acts as the main frame for the appropriate operations of the Cobalt's engine in different Chevrolet Cobalt models. The new complex system of data received from various sensors like oxygen and throttle position sensors controls the air-fuel mixture and the idle speed of the carburetor thus making the combustion process more efficient and less wastage of fuel. The Chevrolet Cobalt ECM is a device compatible with different models and both the first and second generations of the car; The car offered a variety of engines that include 2.2L Ecotec I4, powerful 2.0L Turbo Ecotec I4, and others. This compatibility is important because it makes integration easier, and makes the vehicle more versatile. The Chevrolet Cobalt Engine Control Module is not only useful for increasing a car's power but is also essential for the most important tasks of measuring essential indicators of the engine and preventing potential failures. Due to its unique functions like controlling of fuel pump relay, and switching on of ignition coils the ECM became unique automobile application that every driver may need for getting efficiency and presence of automobile. In general, the engine control module of the Chevrolet Cobalt demonstrates the qualities of the brand as every cobalt unit aims to provide power, fuel efficiency and safety in the streets.

Chevrolet Cobalt Engine Control Module Parts Questions & Experts Answers

PCM
12678511
Q: How to replace the Engine Control Module (ECM) on Chevrolet Cobalt?
A:
Starting the procedure requires ignition shutdown to stop any potential internal module damage while servicing connectors and power lines. The metal case should never come into contact with battery voltage because this leads to damage. Sustain proper handling of the connector pins and soldered components to defend against electrostatic discharge while clearing all dirt from the control module connector faces. Checking control module connector gaskets confirms their correct position is crucial to stop external materials from entering the system. Prior to installing the new module employees need to obtain engine oil life information from a scan tool because otherwise the replacement module will initialize itself to 100% and require an oil change at 5000km (3,000mi) from the last change. The procedure starts with disconnecting the negative Battery Cable followed by Engine Control Module cover removal and seperating the body wiring harness and engine wiring harness electrical connectors from the ecm. Performing steps enables the ecm to detach from underhood junction block bracket through releasing its retaining tab. When installing the ecm users must place it on the underhood junction block bracket before they reconnect the engine wiring harness, small ecm harness connectors and negative Battery Cable and body wiring harness connector. Completion of the procedure requires installation of Engine Control Module cover followed by ecm programming.