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The most common cause for this symptom is lack of fuel pressure. The first thing to do is measure the fuel pressure. It should be 55-60 psi engine running and 60-66 psi engine off key on. You can sometimes gain 3-6 psi just by replacing a clogged fuel filter. Above that you will need to replace the fuel pump itself which is located in the fuel tank. Remember to releave the fuel pressure before disconnecting the fuel lines.

Fuel Pump 2002 Chevrolet Silverado 1500 5.3L

Removal & Installation

To Remove:

  1. Remove the fuel tank.
  2. Disconnect the fuel lines.
  3. Using the J 45722 or equivalent, remove the sending unit lock ring.

    Fuel Pump

  4. Remove the sending unit and seal.
  5. Discard the seal.

    CAUTION
    Drain the fuel from the fuel sender assembly into an approved container in order to reduce the risk of fire and personal injury. Never store the fuel in an open container.

  6. Clean sealing surfaces.

To Install:

CAUTION
In order to reduce the risk of fire and personal injury that may result from a fuel leak, always replace the fuel sender gasket when reinstalling the fuel sender assembly.

  1. Install a NEW seal.

    CAUTION
    The fuel pump strainer must be in a horizontal position when the sending unit is installed in the tank. When installing the sending unit, assure that the fuel pump strainer does not block full travel of the float arm.

  2. Install the sending unit into the fuel tank.
  3. Using J 45722 or equivalent, install the sending unit lock ring.
  4. Connect the fuel lines to the sending unit.
  5. Install the fuel tank.