Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Spark Plug And Sparkplug Seat

Courtesy of GENERAL MOTORS CORP.

Correctly position the spark plug washer.
Inspect the spark plug gap. Adjust the gap as needed.
Specification: Spark plug gap: 1.524 mm (0.060 in)

NOTE: Refer to Fastener Notice in Cautions and Notices.

Hand start the spark plug in the corresponding cylinder.
Tighten the spark plug.
Tighten:
- Tighten the plug to 15 N.m (11 lb ft) for used heads.
- Tighten the plug to 20 N.m (15 lb ft) for NEW heads.
Install the spark plug wire. Refer to Spark Plug Wire Replacement .
Install the washer solvent container. Refer to Washer Solvent Container Replacement (Envoy, TrailBlazer) or Washer Solvent Container Replacement (Rainier) in Wiper/Washer Systems.