What kind of spark plugs are recommended for an 02 Chevrolet trailblazer?

For a 2002 Chevrolet Trailblazer, it is recommended to use AC Delco Professional Iridium spark plugs (part number 41-101) or equivalent. These plugs provide better performance and longevity compared to standard copper plugs. It's essential to check the vehicle's manual for specific requirements and ensure proper gap settings during installation.