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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0446 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2635: Fuel Pump Flow Performance >> Circuit/System Testing
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Circuit/System Testing

NOTE: Do not replace the fuel pump driver control module based on a history DTC P2635. DTC P2635 may be stored but that does not indicate a failure of the fuel pump driver control module. Refer to Strategy Based Diagnosis for further history DTC diagnostics.
  1. Verify the proper fuel system pressure. Refer to Fuel System Diagnosis .
    • If the fuel pressure is not normal 

      Repair the fuel system as necessary.

    • If the fuel pressure is normal 
  2. All OK.
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