Installation Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Spark Plugs

Courtesy of GENERAL MOTORS CORP.

Inspect the spark plug gap. Adjust the gap as needed. Refer to Engine Mechanical Specifications .
Install the spark plug into the cylinder head by hand.

CAUTION: Refer to Fastener Caution .

Tighten the spark plug to 15 N.m (11 lb ft).

Fig 2: View Of Spark Plug Wire Separators & Boots

Courtesy of GENERAL MOTORS CORP.

If reinstalling the old spark plug wires, apply dielectric grease GM P/N 12345579 (Canadian P/N 10953481), or equivalent to the inside the spark plug wire boots.
Install the appropriate spark plug wire boot(s) (2) to the spark plug.