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Home >> GMC >> 1990 >> Forward Control 4.3 Z, Automatic, 3L80-HD/M40 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (Diesel) >> Fuel Pump >> Removal & Installation
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Removal & Installation

  1. Disconnect negative battery cable. Disconnect electrical wiring from fuel pump and fuel pump support bracket.
  2. Disconnect fuel lines from fuel pump. Remove support bracket screws and remove support bracket from brake lines. Remove fuel pump and bracket from frame rail.
  3. To install, reverse removal procedure. Check for fuel leak at fuel line fittings.