Grand Cherokee 2WD V8-4.7L VIN J (2004)
Muffler: Service and Repair
MUFFLER
REMOVAL
All original equipment exhaust systems are manufactured with the tailpipe welded to the muffler. Service replacement mufflers and tailpipes are either
clamped together or welded together.
WARNING: IF TORCHES ARE USED WHEN WORKING ON THE EXHAUST SYSTEM, DO NOT ALLOW THE FLAME NEAR THE
FUEL LINES.
1. Raise and support the vehicle.
2. Saturate the bolts and nuts with heat valve lubricant. Allow 5 minutes for penetration.
3. Loosen the exhaust clamp on the catalytic converter to muffler connection.
4. Heat the catalytic converter-to-muffler connection with a torch until the metal becomes cherry red.
5. While the metal is still cherry red, remove the tailpipe/muffler assembly from the catalytic converter.