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HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROLS - 3.9L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSSPARK PLUG WIRE 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 variant/trim than selected.
NOTE: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.
  1. Remove intake manifold cover. Refer to INTAKE MANIFOLD COVER REPLACEMENT .
    2. Fig 1: View Of Left Spark Plug/Coil Wire Routing
    GM1582091Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the left side spark plug wires from the spark plugs.
  3. Disconnect the left side spark plug wires from the ignition coil.
  4. If replacing only one plug wire, open the retaining clips and remove the spark plug wire.
  5. Remove the left side spark plug wire clips from the intake manifold bracket and heater inlet and outlet pipe.
  6. Remove the spark plug wire assembly.
    7. Fig 2: View Of Right Spark Plug/Coil Wire Routing
    GM1582938Courtesy of GENERAL MOTORS CORP.
  7. Rotate the engine for access to the back of the engine. Refer to ROTATING THE ENGINE FOR SERVICE ACCESS .
  8. Disconnect the left side spark plug wires from the spark plugs.
  9. Disconnect the right side spark plug wires from the ignition coil.
  10. If replacing only one plug wire, open the retaining clips and remove the spark plug wire.
  11. Remove the right side spark plug wire clip from the ignition coil bracket.
  12. Remove the spark plug wire assembly.
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.