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Home >> GMC >> 1990 >> Forward Control 4.3 Z, Automatic, 400/M40 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (Gasoline) >> Fuel Pump >> Removal & Installation
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Removal & Installation

  1. Relieve fuel system pressure. See FUEL PRESSURE RELIEF (GASOLINE) in this article. Disconnect negative battery cable at battery. Raise vehicle and remove fuel tank. Remove sender unit and pump by turning cam lock counterclockwise using Tool (J-36608 or J-24187).
  2. Remove fuel pump from sending unit by pulling pump up into attaching hose while pulling outward from the bottom support. DO NOT damage rubber insulator or strainer. To install, reverse removal procedure.
NOTE: When installing sending unit, DO NOT fold or twist strainer. This will restrict fuel flow.
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