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 MANUALSCHEVROLET2020EXPRESS 2500 LS, 2.8L ENG VIN 1REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS AND FUEL - 2.8L (LWN) DIESEL - REPAIR INSTRUCTIONSREPAIR INSTRUCTIONSENGINE CONTROL MODULE REPLACEMENT

2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1

Engine Control Module Replacement

2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1SECTION Engine Control Module Replacement

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

Preliminary Procedures

Disconnect the negative battery cable. Battery Negative Cable Disconnection and Connection (Single Battery) , or Battery Negative Cable Disconnection and Connection (Dual Battery)
Reposition the master cylinder without disconnecting the brake lines. Brake Master Cylinder Replacement

Engine Control Module

WARNING:

Refer to Safety Glasses Warning .

RENDER: 1.0x

NO RELATED

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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.