Replace GMC Savana 2500 Ignition Plugs Replacement & GMC Savana 2500 Spark Plugs. Order GMC Savana 2500 Ignition Plug Wires. Explore GMC Savana 2500 Ignition Plug. Regular maintenance of spark plugs is crucial for your GMC Savana 2500's performance, ensuring smooth engine operation and fuel efficiency. Signs that indicate the need for replacement include misfiring, rough idling, or difficulty starting your vehicle. To extend the lifespan of your spark plugs, adhere to scheduled service intervals and opt for high-quality materials, like iridium or platinum, which offer durability and better conductivity. When selecting the right spark plugs, consider those specifically designed for the power demands of your Savana 2500, as they will optimize combustion and enhance overall engine health. Installation is straightforward, but always ensure the correct gap setting for optimal performance.