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How to Replace a Grand Cherokee Cat Back Exhaust

Replacing the entire exhaust, from the catalytic converter to the tail pipe, on the Jeep Grand Cherokee can be done in a few simple steps. The system can be changed to add a performance exhaust or to just replace a damaged or rusted exhaust system. The catalytic converter does not need to be changed unless it is damaged or if you are interested in adding a high flow catalytic converter on the Jeep. There are many different systems out there that will add performance, durability and longevity to your exhaust system.

Instructions

1

Raise the Jeep off the ground using a jack and support the Jeep on all four corners with a set of jack stands. Be sure you are working on level, solid ground, before raising the Jeep, to prevent the jack stands or the Jeep from moving while you are working under it.

2

Locate the rubber hanger that supports the tail pipe behind the rear axle. Push the pin on the tail pipe out of the hanger and let the tail pipe hang down.

3

Move up to the muffler and locate the joint between the catalytic converter and the muffler. It will have an exhaust clamp holding the two pipes together.

4

Loosen the bolt on the exhaust clamp with a wrench or socket and ratchet and slide the two pipes apart. They may not come apart easily, so wiggle or turn the muffler to help free the pipe.

5

Slide the exhaust pipe and muffler out from under the Jeep as a unit and discard. Position the new exhaust system into place under the Jeep and lift it up, sliding the tail pipe over the top of the rear axle.

6

Slide the new muffler onto the pipe at the back of the catalytic converter, making sure it is completely on the pipe. If you do not get it all the way into place, the rear hanger will not line up.

7

Lift the tail pipe up and slide the pin on the tail pipe into the rubber exhaust hanger. Move forward and install a new exhaust clamp on the pipe that connects the catalytic converter to the muffler.

8

Tighten the nuts on the clamp with a wrench or socket and ratchet. Remove the jack stands from under the Jeep and lower the Jeep to the ground with your jack.