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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 407 (Engine Controls - Basic Diagnostic Procedures - 3.1L) >> Fuel Systems >> Fuel Pump Electrical Circuit Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the ground connection for the fuel pump. Ensure all ground connections are clean and tight.
  2. The following conditions may have caused the fuel pump fuse to open:
    • The fuse is faulty.
    • There is an intermittent short in the fuel pump power feed circuit.
    • The fuel pump has an intermittent internal problem.
  3. For an intermittent condition, see INTERMITTENTS in TROUBLE SHOOTING - 3.1L CENTURY, GRAND PRIX & MALIBU article.
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