Spark Plug Replacement

Fig 1: Spark Plug

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
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. Preliminary Procedure Remove the ignition coils. Refer to Ignition Coil Replacement .
1	Spark Plugs (Qty: 4) CAUTION: Refer to Component Fastener Tightening Caution . Tighten 20 (15 lb ft)