03-05 Chev./GMC Silverado/Sierra EC/SB 6.0L “COOL DUALS”™ Removal of stock system: 1. Measure and mark the pipe closest to the frame 14" from the front of the muffler. For the pipe closest to the drive shaft measure and mark the pipe 17" from the front of the muffler. The pipes now need to be cut square where the pipes were marked. 2. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. 3.
