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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 510 (Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P129E or P12A8: Fuel Pump Control >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • DTC P129E and P12A8 are informational DTCs.
  • Diagnose all other engine control module DTCs prior to DTC P129E or P12A8.
  1. Verify that no other DTCs are set except for DTC P129E or P12A8.
    • If only DTC P129E or P12A8 is set 
  2. Replace the K111 Fuel Pump Power Control Module.
  3. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If DTC sets 

      Replace the K20 Engine Control Module.

    • If DTC does not set 
  4. All OK.
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