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Home >> Chevrolet >> 2024 >> Express 2500 Base, Van Cargo Extended, 6.6L Eng VIN 7 >> Repair and Diagnosis >> Engine Performance >> System >> Data Communications >> Diagnostic Information and Procedures >> DTC U101A >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify DTC U101A is not set.
    • If the DTC is set 
    1. Verify the K111 Fuel Pump Driver Control Module is programmable. Refer to Control Module References .
      • If the K111 Fuel Pump Driver Control Module is not programmable, replace the K111 Fuel Pump Driver Control Module.
      • Go to next step: If the K111 Fuel Pump Driver Control Module is programmable
    2. Perform all necessary programming, setup, and configure procedures for the K111 Fuel Pump Driver Control Module.
    3. Verify the DTC does not set.
      • If the DTC sets, replace the K111 Fuel Pump Driver Control Module.
      • Go to next step: If the DTC does not set
    4. All OK.
    • Go to next step: If the DTC is not set 
  3. All OK
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