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HOMESERVICE MANUALSCHEVROLET2020EXPRESS 2500 LS, 4.3L ENG VIN P, GASREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS AND FUEL - 4.3L (LV1) - REPAIR INSTRUCTIONSREPAIR INSTRUCTIONSENGINE CONTROL MODULE REPLACEMENT
2020 Chevrolet Express 2500 LS, 4.3L Eng VIN P, Gas

Engine Control Module Replacement

2020 Chevrolet Express 2500 LS, 4.3L Eng VIN P, GasSECTION Engine Control Module Replacement
GM4843159Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Disconnect the negative battery cable. Battery Negative Cable Disconnection and Connection (Single Battery) , or Battery Negative Cable Disconnection and Connection (Dual Battery)
  2. Reposition the master cylinder without disconnecting the brake lines. Brake Master Cylinder Replacement
1 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.