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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 INSTRUCTIONSSPARK PLUG REPLACEMENTINSTALLATION PROCEDURE
2006 Buick Terraza CXL, 3.5 L, AWD

Installation Procedure

2006 Buick Terraza CXL, 3.5 L, AWDSECTION Installation 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.
NOTE: It is important to check the gap of all new and reconditioned spark plugs before installation. Pre-set gaps may have changed during handling. Use a round wire feeler gauge to be sure of an accurate check, particularly on used plugs. Installing plugs with the wrong gap can cause poor engine performance and may even damage the engine.
    Fig 1: Installing The Spark Plugs
    GM1587748Courtesy of GENERAL MOTORS CORP.
  1. Gap the NEW spark plugs. Refer to Ignition System Specifications .
    NOTE: Refer to Fastener Notice .
  2. Install the spark plugs.

    Tighten:  Tighten the plugs to 15 N.m (11 lb ft).

    3. Fig 2: Installing The Right Side Spark Plug Wires To The Spark Plugs
    GM1608803Courtesy of GENERAL MOTORS CORP.
  3. Install the right side spark plug wires to the spark plugs, if required.
    4. Fig 3: Installing The Left Side Spark Plug Wires To The Spark Plugs
    GM1608802Courtesy of GENERAL MOTORS CORP.
  4. Install the left side spark plug wires to the spark plugs, if required.
  5. Install the intake manifold cover, if required. Refer to Intake Manifold Cover Replacement .
  6. Install the air cleaner outlet duct, if required. Refer to Air Cleaner Outlet Duct Replacement .
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.