Sierra 1500 4WD V8-6.0L VIN U (2006)
Spark Plug: Service and Repair
SPARK PLUG REPLACEMENT
REMOVAL PROCEDURE
1. Remove the spark plug wire.
2. Loosen the spark plug 1 or 2 turns.
3. Brush or using compressed air, blow away any dirt from around the spark plug.
4. Remove the spark plug.If removing more than one plug, place each plug in a tray marked with the corresponding cylinder number.
INSTALLATION PROCEDURE