Replace GMC Jimmy Ignition Coil Replacement & GMC Jimmy Ignition Coil Price Get GMC Jimmy Ignition Control Module. Purchase GMC Jimmy Ignition Coils. Maintaining the ignition coils of your GMC Jimmy is pivotal for optimal performance. Regularly check and clean the connections to prevent corrosion, which can lead to misfires. Look out for poor fuel economy, engine misfires, or a rough idle as signs it's time to replace your coils. To extend their life, use dielectric grease and ensure your spark plugs are in good condition. When choosing a replacement, opt for coils that match the OEM specifications for your Jimmy; options include canister, coil-on-plug, and multi-spark coils, each designed to deliver efficient combustion. Always prioritize high-quality materials for durability, and follow the manufacturer's guide for a seamless installation to enhance your online shopping experience.