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How to replace a fuel pump on a 87 transam - Trans Pontiac Cars & Trucks

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Electric Fuel Pump REMOVAL & INSTALLATION The fuel pump is part of the fuel sender assembly located inside the fuel tank.

  1. Release the fuel system pressure and disconnect the negative battery cable.
  2. Drain the fuel tank, then raise and safely support the vehicle.
  3. Remove the fuel tank from the vehicle.
  4. Clean the area surrounding the sender assembly to prevent contamination of the fuel system.
  5. Remove the fuel sender from the tank as follows:
    1. Use tool J-24187 or equivalent to remove the sending unit retaining cam. Remove the fuel sender and O-rings from the tank. Discard the O-rings.
  6. If necessary, separate the fuel pump from the sending unit assembly. To install:
  7. If removed, install the fuel pump to the sending unit. If the strainer was removed, it must be replaced with a new one.
  8. Inspect and clean the O-ring mating surfaces.
  9. Install a new O-ring in the groove around the tank opening. If applicable, install a new O-ring on the fuel sender feed tube.
  10. Install the fuel sender assembly as follows:
    1. The fuel pump strainer must be in a horizontal position, and when installed, must not block the travel of the float arm. Gently fold the strainer over itself and slowly position the sending assembly in the tank so the strainer is not damaged or trapped by the sump walls.
  11. Install the retaining cam using tool J-24187 or equivalent.
  12. Install the fuel tank assembly.
  13. Lower the vehicle.
  14. Fill the fuel tank, tighten the fuel filler cap and connect the negative battery cable. Fig. 1: Fuel pump and sending unit assembly how to replace a fuel - 85345070.gif
    Fig. 2: Fuel pump locking cam tool 85345071.gif
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Posted on Sep 30, 2010


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