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Home >> Chevrolet >> 2004 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System 3.8L (Introduction) >> Repair Instructions >> Fuel Pressure Relief Procedure >> Relief Procedure
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Relief Procedure

    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.
  3. Loosen the fuel filler cap to relieve tank vapor pressure.
  4. Connect theJ 34730-1A  to the fuel pressure connection. Wrap a shop towel around the fuel pressure connection while connecting the fuel pressure gage in order to avoid spillage.
  5. Install the bleed hose into an approved container and open the valve to bleed the system pressure. The fuel connections are now safe for servicing.
  6. Drain any fuel remaining in the fuel pressure gage into an approved container.
    7. Fig 1: Connecting J 34730-1A
    GM180378Courtesy of GENERAL MOTORS CORP.
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