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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (4 Of 5)) >> Diagnostic Information and Procedures >> DTC P1178 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC P1178 is not set.
    • If the DTC is set 

      Replace the component: K111 Fuel Pump Power Control Module

    • Go to next step: If the DTC is not set 
  3. All OK.
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