02-06 Chev. Suburban / GMC Yukon XL 5.3L These instructions cover the following systems: S5024304, S5024409, S5024AL Removal of stock system: 1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. 2. Remove the nuts from the studs holding the front flange together and disconnect exhaust system. 3. Remove the hangers from the rubber insulators and remove the exhaust from the vehicle.