Discover GMC Jimmy Ignition Switch. Shop GMC Jimmy Ignition System & GMC Jimmy Ignition Coil Replace GMC Jimmy Ignition. Order GMC Jimmy Ignition Replacement. Maintaining the ignition system of your GMC Jimmy is crucial for optimal performance and longevity. Regular inspection of spark plugs and ignition wires can prevent misfires and rough idling, while ensuring your distributor cap and rotor are clean and intact can stave off starting troubles. If you experience engine stalling or a significant drop in fuel efficiency, it might be time to consider a replacement. When selecting a new ignition, choose from coil packs, distributor-based, or distributorless systems, each offering distinct advantages in efficiency and power delivery. Opt for high-quality materials to enhance durability and consult an expert for precise installation to get your Jimmy back on the road with confidence.