How to Replace the Resonator on an Impala

by Christian Killian
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The resonator is part of the exhaust system on your Impala. It works along with the muffler to reduce engine noise while producing a mellow tone from the exhaust. The resonator is located just behind the catalytic converter and is part of the muffler, tailpipe and exhaust pipe assembly. Replacing the resonator is done as part of the assembly and requires that you remove the entire exhaust from behind the catalytic converter to the tailpipe.

Step 1

Raise your Impala off the ground with a jack and support it with jack stands. Make sure to get it high enough to comfortably work under the car.

Step 2

Locate and remove the two flange mounting bolts just behind the catalytic converter using a wrench or socket and ratchet. Let the pipe droop and move forward to find the rubber hangers that support the rest of the exhaust.

Step 3

Remove the exhaust pipe from the rubber hanger just behind the resonator by pulling the rubber hanger straight off the pin on the exhaust pipe. The rubber hanger may take a little work to get free, but it will slide off without tools.

Step 4

Locate the hanger just in front of the muffler and remove it from the exhaust pipe in the same manner as the first one. Move to the rear and remove the final exhaust hanger behind the muffler. Remove the exhaust pipe from under the car and discard.

Step 5

Position the new exhaust pipe below the hangers on the ground. Working from the rear of the car, raise the exhaust pipe up and slide the hanger rod on the pipe into the rubber hangers. Work forward until all three hangers are engaged.

Step 6

Position the mounting flange on the new pipe so that it abuts the flange on the pipe just behind the catalytic converter. Install the flange gasket and two mounting bolts and tighten them with a wrench or socket and ratchet.

Step 7

Support the car with the jack and remove the jack stands. Lower the car to the ground carefully with the jack.

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