Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Chevrolet Colorado 2WD L5-3.7LFACTORY OEM SERVICE PROCEDURE
Engine Control Module: Testing and Inspection
Engine Control Module Programming and Setup (2.9L and 3.7L)
The following service procedures require either a programming or a setup event be performed for a complete repair.
ECM Replacement
Warning
Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.
If the engine control module (ECM) is replaced, the following procedures must be performed:
1. ECM Reprogramming-Refer to Service Programming System (SPS) Service Programming System (SPS).
2. Clutch pedal position sensor learn-Refer to Clutch Pedal Position Sensor Learn Clutch Pedal Position Sensor Learn.
3. Crankshaft Position (CKP) Variation Learn-Refer to Crankshaft Position System Variation Learn Testing and Inspection for 2.9L engine or Crankshaft Position System Variation Learn Testing and Inspection for 3.7L engine.
4. Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was replaced.
5. Transmission Fluid Life Remaining-When available, use the scan tool to reset the Transmission Fluid Life Remaining back to the original percentage recorded before the module was replaced.
6. Theft Deterrent-Refer to Immobilizer System Component Programming (without BAE) Immobilizer System Component Programming (without BAE)Immobilizer System Component Programming (with BAE) Immobilizer System Component Programming (with BAE).
ECM Reprogramming
If the ECM needs to be reprogrammed, refer to Service Programming System (SPS) Service Programming System (SPS).
Setup for Component Replacement
The replacement of some components will require a setup procedure for complete repair.
If any of the following components are replaced, a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn Testing and Inspection for 2.9L engine or Crankshaft Position System Variation Learn Testing and Inspection for 3.7L engine.
* Engine replacement
* Any engine repair that disturbs the CKP sensor or it's relationship with the crankshaft reluctor wheel
* CKP sensor
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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