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8.3L ENGINE 1. Raise and support the vehicle. 2. Saturate the clamp nuts with heat valve lubricant. Allow 5 minutes for penetration. 3. Remove exhaust pipes (Refer to 11 - EXHAUST SYSTEM/EXHAUST PIPE - REMOVAL). 4. Saturate the clamp nuts with heat valve lubricant. Allow 5 minutes for penetration. 5. Disconnect the muffler hangers. 6. Remove muffler-to-catalytic converter clamp nuts. 7. Remove the muffler. 5.9L DIESEL ENGINE 1. Disconnect the battery negative cables. 2. Raise and support the vehicle. 3. Remove the muffler to tail pipe and extension pipe clamps. 4. Disconnect the muffler from the hanger isolators. 5. Disconnect the muffler from the tailpipe. 6. Disconnect the muffler from the extension pipe and remove from the vehicle. 11 - 18 EXHAUST SYSTEM DR/DH |