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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - INTRODUCTIONREPAIR INSTRUCTIONSFUEL PRESSURE GAGE INSTALLATION AND REMOVALREMOVAL PROCEDURE
2005 Buick LeSabre Limited, 4T65E/M15

Removal Procedure

2005 Buick LeSabre Limited, 4T65E/M15SECTION Removal Procedure
  1. Ensure the fuel pump is OFF
    2. Fig 1: Identifying Fuel Pressure Gauge J 34730-1A
    GM180378Courtesy of GENERAL MOTORS CORP.
  2. Place the bleed hose of the J 34730-1A  into an approved gasoline container. See Special Tools .
  3. Open the bleed valve on the J 34730-1A  in order to bleed the fuel system pressure. See Special Tools .
  4. Place a shop towel under the fuel pressure service connection to catch any remaining fuel spillage.
  5. Remove both the J 34730-1A  from the fuel pressure service connection. See Special Tools .
  6. Drain any fuel remaining in the J 34730-1A  into an approved gasoline container. See Special Tools .
  7. Inspect for leaks using the following procedure:
    1. Turn the ignition ON, with the engine OFF for 2 seconds.
    2. Turn the ignition OFF, for 10 seconds.
    3. Turn the ignition ON, with the engine OFF for 2 seconds.
    4. Turn the ignition OFF.
    5. Inspect for leaks.
  8. Install the cap on the fuel pressure service connection.
  9. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L36) in Engine Mechanical.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.