GM Lumina/Silhouette/Transport APVs 1990-1999 Repair Guide

Relieving Fuel System Pressure

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  1. Disconnect the negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
  2.  
  3. Loosen the fuel filler cap to relieve tank vapor pressure.
  4.  
  5. Connect a suitable fuel gauge to the fuel pressure connection. Wrap a shop towel around the fitting while connecting the gauge to avoid spillage.
  6.  
  7. Install the bleed hose into an approved container and open the valve to bleed the system pressure. Fuel connections are now safe for servicing.
  8.  
  9. Drain any fuel remaining in the gauge into an approved container.
  10.  

 
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