FixVault

Gas Engine Ignition Spark Plug Replacement

GM2812209Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts items in the following chart represent components shown in graphic above.
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)
Procedure 
If reusing spark plugs, Refer to Gas Engine Ignition Spark Plug Inspection .
NOTE:

If using new spark plugs, do not attempt to check gap. Plugs come pre-gapped.


Tighten 
20 N.m (15 lb ft)