GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1830255  Size: SH
  1. Install the studs into the left cylinder head.

  2. Object Number: 1838528  Size: SH
  3. Install a NEW left exhaust manifold gasket.

  4. Object Number: 1838524  Size: SH
  5. Install the left exhaust manifold.

  6. Object Number: 1838522  Size: SH
  7. Loosely install the left exhaust manifold upper bolts into the left cylinder head.
  8. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1838505  Size: SH
  9. Loosely install the left exhaust manifold lower bolts into the left cylinder head.
  10. Tighten the left exhaust manifold bolts.
  11. Tighten
    Tighten the left exhaust manifold bolts to 25 N·m (18 lb ft).


    Object Number: 1838500  Size: SH
  12. Install the engine coolant temperature (ECT) sensor.
  13. Tighten
    Tighten the ECT sensor to 30 N·m (22 lb ft).


    Object Number: 1838495  Size: SH
  14. Place the left exhaust manifold heat shield in position.

  15. Object Number: 1838489  Size: SH
  16. Install the exhaust manifold heat shield bolts.
  17. Tighten
    Tighten the exhaust manifold heat shield bolts to 10 N·m (89 lb in).