Yukon Denali 4WD V8-6.0L Hybrid (2011)
4. Brush or using compressed air, blow away any dirt from around the spark plug.
5. Remove the spark plug.
If removing more than one plug, place each plug in a tray marked with the corresponding cylinder number.
Installation Procedure
1. Correctly position the spark plug washer.
2. Inspect the spark plug gap. Adjust the gap as needed. Refer to Ignition System Specifications See: Application and ID
3. Hand start the spark plug in the corresponding cylinder.
Caution: Refer to Fastener Caution See: Service Precautions/Vehicle Damage Warnings/Fastener Caution.
4. Tighten the spark plug.
Tighten the plug to 15 Nm (11 lb ft).
