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.
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HOMESERVICE MANUALSCHEVROLET2015SILVERADO 1500 HIGH COUNTRY, 5.3L ENG VIN C, RWD, GASREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2321 (PROGRAMMING AND SETUP - ALL SYSTEMS)REPAIR INSTRUCTIONSENGINE CONTROL MODULE PROGRAMMING AND SETUP (LGH OR LML)ECM REPLACEMENT
2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, Gas
ECM Replacement
2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, GasSECTION ECM Replacement
WARNING: This page is about a different car, the 2012 GMC Sierra, 2012 GMC Cab & Chassis Sierra, 2012 Chevrolet Silverado, and 2012 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If the engine control module (ECM) is replaced, the following procedures must be performed:
- Enable ECM Reprogramming-Refer to Service Programming System (SPS) .
- Perform the CKP Variation Learn-Refer to Crankshaft Position Reluctor Wheel Learn .
- Perform a Theft Deterrent Module Programming and Setup-Refer to Theft Deterrent Module Programming and Setup .
- Brake Pedal Position Sensor Learn-Refer to Brake Pedal Position Sensor Learn .
- Perform a Fuel Injector Flow Rate Programming - Refer to Fuel Injector Flow Rate Programming
- Perform a Diesel Particulate Filter (DPF) Service Regeneration Enable-Refer to Diesel Particulate Filter (DPF) Regeneration Enable .
NOTE:
Clear any DTCs that may have set after completing the programming procedure.
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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.