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 Ignition Coil Replacement .
1	Spark Plugs [4x] CAUTION: Refer to Component Fastener Tightening Caution . Procedure If reusing spark plugs, inspect for wear or damage. Refer to Spark Plug Inspection . If using NEW spark plugs, do NOT attempt to check the spark plug gap. The plugs come pre-gapped. Tighten 20 N.m (15 lb ft)

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 Ignition Coil Replacement .

Spark Plugs [4x]

CAUTION: Refer to Component Fastener Tightening Caution .

Procedure

If reusing spark plugs, inspect for wear or damage. Refer to Spark Plug Inspection .
If using NEW spark plugs, do NOT attempt to check the spark plug gap. The plugs come pre-gapped.

Tighten
20 N.m (15 lb ft)