Silverado 3500 4WD V8-6.0L (2007)
1. Correctly position the spark plug washer.
2. Inspect the spark plug gap. Adjust the gap as needed.
3. Hand start the spark plug in the corresponding cylinder.
Notice: Refer to Fastener Notice.
4. Tighten the spark plug.
Tighten the plug to 15 N.m (11 lb ft).