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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 181 (ENGINE CONTROL SYSTEM - 3.5L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSAIR CLEANER ASSEMBLY REPLACEMENTREMOVAL PROCEDURE
2006 Buick Terraza CXL, 3.5 L, AWD

Removal Procedure

2006 Buick Terraza CXL, 3.5 L, AWDSECTION Removal Procedure
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Disconnecting The Positive Crankcase Ventilation (PCV) Tube From The Air Inlet Duct
    GM1608799Courtesy of GENERAL MOTORS CORP.
  1. Remove the left inner fender brace. Refer to Brace Replacement - Front Fender Upper Diagonal .
  2. Loosen the air cleaner outlet duct clamp at the throttle body.
  3. Remove the air cleaner outlet duct from the throttle body.
  4. Disconnect the positive crankcase ventilation (PCV) tube from the air inlet duct. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
    5. Fig 2: Removing The Upper Air Cleaner Housing From The Lower Housing
    GM1554546Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the mass air flow (MAF) sensor electrical connector.
  6. Remove the upper air cleaner housing from the lower housing. Disengage the tabs on the upper housing from the slots on the lower housing.
  7. Without disconnecting the powertrain control module (PCM) connectors, remove the PCM and the harness from the lower air cleaner housing.
  8. Without disconnecting the transmission control module (TCM) connectors, remove the TCM and the harness from the lower air cleaner housing.
  9. Loosen the air cleaner outlet duct clamp at the air cleaner assembly.
  10. Remove the air cleaner outlet duct from the air cleaner.
    11. Fig 3: Removing The Lower Air Cleaner Housing
    GM1554550Courtesy of GENERAL MOTORS CORP.
  11. Remove the lower air cleaner housing by pulling the housing from the 2 rubber grommets on the inner rail.
  12. Inspect the air cleaner housing assembly for signs of damage and replace if necessary.
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.