GM Service Manual Online
For 1990-2009 cars only

Catalytic Converter Replacement - Right Side 3.5L (L66)

Removal Procedure

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

  2. Object Number: 930960  Size: SH
  3. Remove the front lower air deflector.

  4. Object Number: 1228627  Size: SH
  5. Disconnect the oxygen sensor (O2S) electrical connectors (1, 2).
  6. Remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement .
  7. Remove the catalytic converter bracket.
  8. Remove the catalytic converter nuts.
  9. Remove the catalytic converter.

Installation Procedure

  1. Install the catalytic converter.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the catalytic converter nuts.
  4. Tighten
    Tighten the nuts to 18 N·m (13 lb ft).

  5. Install the catalytic converter bracket and bolts.
  6. Tighten
    Tighten the bolts to 22 N·m (16 lb ft).

  7. Install the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement .

  8. Object Number: 1228627  Size: SH
  9. Connect the O2S electrical connectors (1, 2).
  10. Install the front lower air deflector.
  11. Lower the vehicle.