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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - INTRODUCTIONREPAIR INSTRUCTIONSIDLE AIR CONTROL (IAC) VALVE REPLACEMENTREMOVAL PROCEDURE
2005 Buick LeSabre Limited, 4T65E/M15

Removal Procedure

2005 Buick LeSabre Limited, 4T65E/M15SECTION Removal Procedure
    Fig 1: Removing/Replacing Fuel Injector Sight Shield & Fuel Pressure Connection Cap
    GM49594Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L36) in Engine Mechanical.
    2. Fig 2: View Of IAC Valve Electrical Connector
    GM155466Courtesy of GENERAL MOTORS CORP.
  2. Remove the electrical connector from the idle air control (IAC) valve.
    3. Fig 3: Removing/Installing IAC Valve Attaching Screws
    GM200431Courtesy of GENERAL MOTORS CORP.
  3. Remove the 2 IAC valve attaching screws.
    4. Fig 4: Removing/Installing IAC Valve
    GM481081Courtesy of GENERAL MOTORS CORP.
  4. Remove the IAC valve from the throttle body.
    5. Fig 5: Removing/Installing IAC Valve "O" Ring
    GM481091Courtesy of GENERAL MOTORS CORP.
  5. Remove the O-ring from the idle air control valve.
  6. Inspect the O-ring for cracks or damage. Replace the O-ring if necessary.
RENDER: 1.0x

NO RELATED

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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.