Silverado 1500 2WD V6-4.3L (2007)
1. Ensure that the spark plug washer is positioned correctly.
2. Inspect the spark plug gap. Adjust the gap as needed.
3. Install the spark plug into the cylinder head by hand. (left side shown, right similar).
Notice: Refer to Fastener Notice.
4. Tighten the spark plug.
Tighten the plug to 15 N.m (11 lb ft).
5. If reinstalling the old spark plug wires, apply dielectric grease GM PN 12345579 (Canadian PN 10953481), or equivalent to the inside the spark
plug wire boots.
6. Install the appropriate spark plug wire boot(s) (2) to the spark plug. (left side shown, right similar).
