Review on 🚗 Enhance Your Driving Experience with Walker Exhaust Quiet-Flow 21356 Exhaust Muffler by Zachary Spaulding

The OEM muffler for the 2003 Silverado is a one-piece welded CAT rear system and costs about $800-$1100. The aftermarket systems were bare steel and didn't last long. The only stainless steel I could find after the muffler was the Walker. My front pipe and exhaust are also stainless steel but were in good condition. I carefully cut out the muffler, used a heavy duty pipe expander on the exhaust pipe inlet, temporarily reassembled the system, took my time and marked the inlet and outlet, removed all three pieces and welded them 360* around (no clamps), new rubber hangers too . The muffler is not GM but could last another 2-3 years.