Exhaust System: Service and Repair

Exhaust System Replacement (LP1)

Removal Procedure

Caution: Refer to Exhaust Service Caution.

Caution: Refer to Protective Goggles and Glove Caution.




1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Disconnect the left and right bank 2 heated oxygen sensor (HO2S) electrical connectors (bank 1 shown, bank 2 similar).
3. Remove the HO2S wiring harnesses from the transmission case.




4. Remove the exhaust pipe nuts and separate the exhaust system from the catalytic converters.




5. Remove the muffler front hanger from the frame hanger rod.




6. Remove the tail pipe hangers from the muffler rods.




7. Remove the floor panel tunnel brace bolts.
8. Remove the floor panel tunnel brace from the floor panel.




9. With the aid of an assistant, lower the exhaust system.
10. Inspect and replace the exhaust system to catalytic converter seals if excessive wear or damage is noticed.




11. Remove the muffler rear hangers (2) from the muffler(s).
12. Remove the HO2S from the exhaust system.

Installation Procedure




1. Install the HO2S to the exhaust system.
2. Install the muffler rear hangers (2) to the muffler(s).





Notice: Refer to Exhaust System Inspection Notice.

Notice: Refer to Flex Decoupler Notice.

3. With the aid of an assistant, raise the exhaust system into position.
4. Install the exhaust system (muffler) nuts.




5. Install the muffler to the muffler rear hangers.




6. Install the muffler rear hanger to the hanger rod.





Notice: Refer to Fastener Notice.

7. Install the exhaust pipe nuts.

Tighten the nuts to 22 N.m (16 lb ft).




8. Install the floor panel tunnel brace to the floor panel.
9. Install the floor panel tunnel brace bolts.

Tighten the floor panel tunnel brace bolts to 25 N.m (18 lb ft).




10. Connect the left and right bank 2 HO2S electrical connectors (bank 1 shown, bank 2 similar).
11. Install the HO2S wiring harnesses to the transmission case.
12. Lower the vehicle.