007 Chev Avalanche & GMC Yukon XL 5.3L Removal of stock system: 1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. Figure 1 2. Remove the hangers from the rubber insulators and remove the exhaust from the vehicle. The tail pipe will need to be cut to clear the rear axle. Refer to Figures 1 & 2. 3. Remove the hardware holding the front flange together and disconnect exhaust system. Refer to Figure 3. Figure 2 4. Remove the exhaust. Refer to Figure 4.
