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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Fuel System Diagnosis >> Circuit/System Testing >> Fuel Pressure Drops OFF

Fuel Pressure Drops OFF

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  1. Verify none of the conditions listed below exist:
    • Restricted fuel feed pipe
    • Restricted or plugged strainer
    • Poor connections at the Fuel Pump harness connector and the ground circuit.
    • If a condition exist 

      Repair as necessary.

    • Go to next step: If a condition does not exist 
  2. Test or replace the G12 Fuel Pump.
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