2012 Buick Regal BaseFACTORY OEM SERVICE PROCEDURE

Removal Procedure

CAUTION:

This engine has aluminum cylinder heads. Do not remove the spark plugs from a hot engine, allow it to cool first. Removing the spark plugs from a hot engine may cause spark plug thread damage or cylinder head damage.

    Fig 1: Spark Plugs
    GM2223431Courtesy of GENERAL MOTORS COMPANY
  1. Remove the ignition coil(s). Refer to Ignition Coil ReplacementΒ .
  2. NOTE:

    Make sure that any water and/or debris is blown out of the spark plug holes prior to removing the spark plugs.

  3. Remove the spark plugs (1) using a 5/8 inch spark plug socket.
Factory Service Tools

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When to See a Mechanic

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

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