GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement 2.4L

Removal Procedure

  1. Disconnect the cable from the negative battery terminal. Refer to Battery Negative Cable Disconnection and Connection
  2. Remove the right hand engine under cover.

  3. Object Number: 2016203  Size: SH
  4. Disconnect the front exhaust pipe assembly.
  5. Disconnect the heated oxygen sensor connector.
  6. Remove the 2 bolts (1), 2 compression springs and the front exhaust pipe assembly.
  7. Remove the gasket from the exhaust manifold.

  8. Object Number: 2016204  Size: SH
  9. Remove the 4 bolts (1, 2, 3, 4) and the exhaust manifold heat insulator.
  10. Remove the air fuel ratio sensor.

  11. Object Number: 2016205  Size: SH
  12. Remove the bolt (2), nut (1) and manifold support bracket.

  13. Object Number: 2016206  Size: SH
  14. Remove the bolt (2), nut (1) and the manifold support bracket.

  15. Object Number: 2016208  Size: SH
  16. Remove the 5 nuts (1, 2, 3, 4, 5) and the exhaust manifold converter sub-assembly.
  17. Remove the gasket.

  18. Object Number: 2016211  Size: SH
  19. Remove the 2 bolts (1, 2) and the exhaust manifold heat insulator.

  20. Object Number: 2016213  Size: SH
  21. Remove the 4 bolts (1, 2, 3, 4) and the manifold converter heat insulator.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2016213  Size: SH
  1. Install the manifold converter heat insulator with the 4 bolts (1, 2, 3, 4) and tighten to 12 N·m (9 lb ft).

  2. Object Number: 2016211  Size: SH
  3. Install the exhaust manifold heat insulator with the 2 bolts (1, 2) and tighten to 12 N·m (9 lb ft).
  4. Install a new gasket.

  5. Object Number: 2016214  Size: SH
  6. Install the exhaust manifold converter sub-assembly with the 5 nuts (1, 2, 3, 4, 5) in the order shown in the illustration and tighten to 37 N·m (27 lb ft).

  7. Object Number: 2016206  Size: SH
  8. Install the manifold support bracket with the bolt (1) and nut (2) and tighten to 44 N·m (33 lb ft).

  9. Object Number: 2016205  Size: SH
  10. Install the manifold support bracket with the bolt (2) and nut (1) and tighten to 44 N·m (33 lb ft).
  11. Install air fuel ratio sensor.

  12. Object Number: 2016204  Size: SH
  13. Install the exhaust manifold heat insulator with the 4 bolts (1, 2, 3, 4) and tighten to 12 N·m (9 lb ft).
  14. Connect the front exhaust pipe assembly. Refer to Front Pipe Replacement.
  15. Using a plastic hammer and wooden block, tap in the new gasket until its surface is flush with the exhaust manifold.
  16. Install right hand engine under cover.
  17. Connect cable to negative battery terminal.
  18. Inspect for exhaust gas leaks.

Exhaust Manifold Replacement 1.8L

Removal Procedure

  1. Remove the windshield wiper motor and link assembly. Refer to Windshield Wiper Motor Replacement.
  2. Remove the outer cowl top panel.
  3. Remove the engine cover. Refer to Engine Cover Replacement.
  4. Remove the air fuel ratio sensor. Refer to Heated Oxygen Sensor 1 Replacement.

  5. Object Number: 2016451  Size: SH
  6. Remove the 4 bolts (1, 2, 3, 4) and the exhaust manifold heat insulator.

  7. Object Number: 2016455  Size: SH
  8. Disconnect the front exhaust pipe assembly. Refer to Front Pipe Replacement.

  9. Object Number: 2016456  Size: SH
  10. Remove the 3 bolts (1, 2, 3) and the manifold support bracket.

  11. Object Number: 2016457  Size: SH
  12. Remove the 5 nuts (1, 2, 3, 4, 5) and the exhaust manifold.
  13. Remove the exhaust manifold gasket.

  14. Object Number: 2016458  Size: SH
  15. Remove the 3 bolts (1, 2, 3) and the exhaust manifold heat insulator.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2016458  Size: SH
  1. Install the exhaust manifold heat insulator with the 3 bolts (1, 2, 3) and tighten to 12 N·m (9 lb ft).

  2. Object Number: 2016457  Size: SH
  3. Install a new exhaust manifold gasket.
  4. Install the exhaust manifold with the 5 nuts (1, 2, 3, 4, 5) and tighten to 21 N·m (16 lb ft).

  5. Object Number: 2016456  Size: SH
  6. Install the manifold support bracket with the 3 bolts (1, 2, 3) and tighten to 43 N·m (32 lb ft).
  7. Connect the front exhaust pipe assembly. Refer to Front Pipe Replacement.

  8. Object Number: 2016451  Size: SH
  9. Install the exhaust manifold heat insulator with the 4 bolts (1, 2, 3, 4) and tighten to 12 N·m (9 lb ft).
  10. Install the air fuel ratio sensor. Refer to Heated Oxygen Sensor 1 Replacement.
  11. Install the engine cover. Refer to Engine Cover Replacement.
  12. Install the outer cowl top panel.
  13. Install the windshield wiper motor and link assembly. Refer to Windshield Wiper Motor Replacement.
  14. Inspect for exhaust gas leak.