Catalytic Converter Replacement (Service)

2013 Chevrolet Impala V6-3.6LSECTION Catalytic Converter Replacement (Service)



Catalytic Converter Replacement (Service)

Removal Procedure

Warning:
Refer to Hot Exhaust System Warning Hot Exhaust System Warning.


Warning:
Refer to Safety Glasses Warning Safety Glasses Warning.


1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.





2. Cut the exhaust pipe (2) 64mm (2.5 inches) from the front exhaust muffler front hanger rods (a).





3. Remove the exhaust front pipe fasteners (3) from the catalytic converter (1) and discard the exhaust gasket (2).

4. Remove the catalytic converter (1).

Installation Procedure





Caution:
Refer to Fastener Caution Fastener Caution.

1. Install the NEW catalytic converter (1) with a NEW gasket (2) and tighten the exhaust front pipe fasteners (3) to 43 Nm (32 lb ft).





2. Install the exhaust service clamp (2) onto the exhaust muffler and the NEW catalytic converter. Tighten the exhaust clamp fasteners (1) to 50 Nm (37 lb ft).

3. Inspect the exhaust system for leaks.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.