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Home >> GMC >> 1998 >> Forward Control 7.4 J >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls - Remove/Install/Overhaul - 5.7L) >> Fuel System >> Fuel System Pressure Relief
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Fuel System Pressure Relief

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect negative battery cable. Loosen fuel filler cap to relieve fuel tank pressure. Install Fuel Pressure Gauge (J-34730-1) to fuel pressure connection.
  2. Wrap shop towel around pressure connection when installing fuel pressure gauge to absorb fuel leakage. Place gauge bleed hose into suitable container. Open bleed valve to bleed fuel pressure.
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