Removal & Installation
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Remove the spark plug wires. Loosen each spark plug 1 or 2 turns. Brush or air blast away any dirt from around the spark plugs. Remove the spark plugs 1 at a time. Place each plug in a tray marked with the corresponding cylinder number. Inspect each spark plug gap. Adjust each plug as needed. Tighten to specification. See TORQUE SPECIFICATIONS .