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HOMESERVICE MANUALSCHEVROLET2020EXPRESS 2500 LS, 2.8L ENG VIN 1REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESPROGRAMMING AND SETUPREPAIR INSTRUCTIONSK73 TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE: PROGRAMMING AND SETUP (CV3/EF7/Z49)REPLACE AND PROGRAM CONTROL MODULE OR REPROGRAM CONTROL MODULE
2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1

Replace and Program Control Module or Reprogram Control Module

2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1SECTION Replace and Program Control Module or Reprogram Control Module

To program a replacement or an existing control module, perform the following procedure:

  1. Access the Service Programming System (SPS) and follow the on-screen instructions.
  2. In the SPS Supported Controllers screen, select K73 Telematics Communication Interface Control Module Programming and Service Activation and follow the on-screen instructions.
  3. Clear DTCs.
  4. After Control Module Programming and Service Activation, if the vehicle is equipped with RPO VV4, on the Supported Controllers screen select K73 Telematics Communication Interface Control Module WiFi Enable (Gen 10 only) Programming and follow the on-screen instructions.
    NOTE:

    The WiFi Enable step must be performed AFTER the Programming and Service Activation step, or WiFi will not function. If Programming and Service Activation step is performed after the WiFi Enable step, WiFi will be disabled.

  5. Press the OnStar® Blue Button to call OnStar® and have the system activated. If the customer refused OnStar® services (terms and conditions) and the vehicle is equipped with RPO VV4 have the OnStar® consultant turn off the WiFi demo message that occurs after every ignition on event.
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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.