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HOMESERVICE MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASIMAGE DISPLAY CAMERA SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESREAR VISION CAMERA SYSTEM MALFUNCTION (CHEVROLET/GMC WITH IO5/IO6 WITH REAR SEAT ENTERTAINMENT)CIRCUIT/SYSTEM TESTINGCIRCUIT/SYSTEM TESTING - D: NO ENHANCED REAR VIEW CAMERA IMAGE
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas

Circuit/System Testing - D: No Enhanced Rear View Camera Image

2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Circuit/System Testing - D: No Enhanced Rear View Camera Image
  1. Ignition OFF, disconnect the K74 Human Machine Interface Control Module X1 harness connector. Ignition ON.
  2. Verify a test lamp illuminates between serial data communication enable circuit terminal 5 and ground.
    • If the test lamp does not illuminate 
    1. Ignition/Vehicle OFF.
    2. Test for infinite resistance between the serial data communication enable circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the serial data communication enable circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the control module that controls the serial data communication enable circuit.
    • Go to next step: If the test lamp illuminates 
  3. Ignition OFF, Connect the K74 Human Machine Interface Control Module X1 harness connector.
  4. Disconnect the K74 Human Machine Interface Control Module X2 harness connector and K188 Human Machine Interface Control Module Bypass Module X1 harness connector. Ignition ON.
  5. Test for less than 1 V between the signal circuit terminals listed below and ground:
    • K188 Human Machine Interface Control Module Bypass Module signal (+) circuit terminal 8 X1
    • K188 Human Machine Interface Control Module Bypass Module signal (-) circuit terminal 20 X1
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • Go to next step: If less than 1 V 
  6. Ignition OFF.
  7. Test for infinite resistance between the signal circuit terminals listed below and ground:
    • K188 Human Machine Interface Control Module Bypass Module signal (+) circuit terminal 8 X1
    • K188 Human Machine Interface Control Module Bypass Module signal (-) circuit terminal 20 X1
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • Go to next step: If infinite resistance 
  8. Test for less than 2 Ω between the K188 Human Machine Interface Control Module Bypass Module signal (+) circuit terminal 8 X1 and the K74 Human Machine Interface Control Module signal (+) circuit terminal 5 X2.
    • If 2 Ω or greater 

      Repair the open/high resistance on the circuit.

    • Go to next step: If less than 2 Ω 
  9. Test for less than 2 Ω between the K188 Human Machine Interface Control Module Bypass Module signal (-) circuit terminal 20 X1 and the K74 Human Machine Interface Control Module signal (+) circuit terminal 6 X2.
    • If 2 Ω or greater 

      Repair the open/high resistance on the circuit.

  10. Ignition ON.
    NOTE:

    For accurate voltage reading, disconnect the battery charger prior to performing the following test step.

  11. Test for 2 - 12 V between the K188 Human Machine Interface Control Module Bypass Module LIN serial data circuit terminal 3 X1 and ground.
    • If less than 2 V 
    1. Ignition OFF.
    2. Test for infinite resistance between the serial data circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance
    3. Test for less than 2 Ω in the serial data circuit end to each end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • Go to next step: If less than 2 Ω
    4. Replace P17 Info Display Module.
    5. Reconnect the K74 Human Machine Interface Control Module, ignition ON.
    6. Test for 2 - 12 V between the LIN serial data circuit terminal and ground.
      • If less than 2 V, replace the K74 Human Machine Interface Control Module.
      • If greater than 2 V, replace the K188 Human Machine Interface Control Module Bypass Module.
    • If greater than 12 V 
    1. Ignition OFF, disconnect the X1 harness connector at the P17 Info Display Module.
    2. Ignition ON.
    3. Test for less than 1 V between the serial data circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • Go to next step: If less than 1 V
    4. Replace P17 Info Display Module.
    5. Ignition OFF, reconnect the K74 Human Machine Interface Control Module, ignition ON.
    6. Test for 2 - 12 V between the LIN serial data circuit terminal and ground.
      • If greater than 12 V, replace the K74 Human Machine Interface Control Module.
      • If less than 12 V, replace the K188 Human Machine Interface Control Module Bypass Module.
    • Go to next step: If between 2 - 12 V 
  12. Re-connect the K74 Human Machine Interface Control Module and the K188 Human Machine Interface Control Module Bypass Module harness connectors.
  13. Ignition OFF, disconnect the K74 Human Machine Interface Control Module X5 and the K188 Human Machine Interface Control Module Bypass Module harness connector X2.
  14. Connect the EL-50334-2 to the K74 Human Machine Interface Control Module connector X5 and EL-50334-14 to the K188 Human Machine Interface Control Module Bypass Module connector X2. Connect EL-50334-2 and EL-50334-14 together.
  15. Engine running, parking brake applied, transmission in REVERSE.
  16. Verify the enhanced rear view image displays properly.
    • If the enhanced image displays properly 

      Replace the USB harness between the K74 Human Machine Interface Control Module X5 and the K188 Human Machine Interface Control Module Bypass Module harness connector X2.

    • Go to next step: If the enhanced image does not display properly 
  17. Ignition OFF, remove the EL-50334-14 from the K188 Human Machine Interface Control Module Bypass Module harness connector X2 and EL-50334-2 from the K74 Human Machine Interface Control Module connector X5.
  18. Re-connect the K188 Human Machine Interface Control Module Bypass Module harness connector X2.
  19. Disconnect the P17 Info Display Module harness connector X3.
  20. Connect the EL-50334-15 B1 end (short end) to the K74 Human Machine Interface Control Module connector X5 and EL-50334-15 orange end to the P17 Info Display Module X3.
  21. Engine running, parking brake applied, transmission in REVERSE.
  22. Verify the enhanced image displays properly.
    • If the enhanced image displays properly 

      Replace the K188 Human Machine Interface Control Module Bypass Module.

    • Go to next step: If the enhanced image does not display properly 
  23. Replace the K74 Human Machine Interface Control Module.
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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.