Repair Procedures
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
A new converter with less than 100 miles on it may set DTC P0420 or P0430 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 hour may correct the condition.
- Exhaust Manifold Replacement - Left Side (4.8L, 5.3L, 6.0L, and 6.2L) , Exhaust Manifold Replacement - Left Side (6.6L) or Exhaust Manifold Replacement - Left Side (4.3L)
- Exhaust Manifold Replacement - Right Side (4.8L, 5.3L, 6.0L, and 6.2L) , Exhaust Manifold Replacement - Right Side (6.6L) or Exhaust Manifold Replacement - Right Side (4.3L)
- Heated Oxygen Sensor Replacement - Bank 1 Sensor 2
- Heated Oxygen Sensor Replacement - Bank 2 Sensor 2
- Exhaust Leakage
- Restricted Exhaust