GM Service Manual Online
For 1990-2009 cars only

Catalytic Converter Replacement 1.4L LDT/1.6L LXV

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 2049035  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Disconnect the front heated oxygen sensor connector.
  3. Remove the oil level gage tube.
  4. Remove the exhaust manifold heat shield.

  5. Object Number: 2049036  Size: SH
  6. Remove the catalytic converter upper flange nuts.

  7. Object Number: 2049037  Size: SH
  8. Remove the exhaust front pipe mounting bracket bolt.
  9. Remove the catalytic converter lower flange nuts.
  10. Remove the catalytic converter and the gasket.

Installation Procedure


    Object Number: 2049037  Size: SH
  1. Install the catalytic converter and the gasket.
  2. Caution: Refer to Fastener Caution in the Preface section.

    Note: Position the catalytic converter onto the exhaust manifold flange with one upper flange nut.

  3. Install the catalytic converter lower flange nuts and the exhaust front pipe mounting bracket and tighten.
  4. • The exhaust front pipe to catalytic converter nuts to 40 N·m (30 lb ft).
    • The exhaust front pipe mounting bracket bolt to 40 N·m (30 lb ft).

    Object Number: 2049036  Size: SH
  5. Install the catalytic converter upper flange nuts to exhaust manifold nuts to 40 N·m (30 lb ft).

  6. Object Number: 2049035  Size: SH
  7. Install the exhaust manifold heat shield and tighten to 8 N·m (5.9 lb ft).
  8. Note: Check the oil. If the oil dropped when removing the oil level gage tube, check and refill it.

  9. Install the oil level gage tube.
  10. Connect the front heated oxygen sensor connector.
  11. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.

Catalytic Converter Replacement 1.2L

Removal Procedure

    Warning: Refer to Exhaust Service Warning in the Preface section.

    Caution: Refer to Flex Decoupler Caution in the Preface section.

    Caution: Refer to Catalytic Converter Movement Caution in the Preface section.


    Object Number: 1241942  Size: SH
  1. Remove the exhaust manifold cover with the bolts.

  2. Object Number: 1241943  Size: SH
  3. Remove the catalytic converter upper flange nut.

  4. Object Number: 1241944  Size: SH
  5. Remove the connecting pipe mounting bracket bolt.
  6. Remove the catalytic converter lower flange nuts.
  7. Remove the catalytic converter and the gasket.

Installation Procedure


    Object Number: 1241944  Size: SH
  1. Install the catalytic converter and the gasket.
  2. Caution: Refer to Fastener Caution in the Preface section.

    Note: Position the catalytic converter onto the exhaust manifold flange with one upper flange nut.

  3. Install the catalytic converter lower flange nuts and the connecting pipe mounting bracket and tighten.
  4. • The connecting pipe to catalytic converter nuts to 40 N·m (30 lb ft).
    • The connecting pipe mounting bracket bolt to 40 N·m (30 lb ft).

    Object Number: 1241943  Size: SH
  5. Install the catalytic converter upper flange nuts and tighten to 50 N·m (37 lb ft).

  6. Object Number: 1241942  Size: SH
  7. Install the exhaust manifold cover bolts and tighten to 15 N·m (11 lb ft).