GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 HHR 🢒 Engine 🢒 Engine Mechanical - 2.2L (L61) 🢒 Exhaust Manifold Installation

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 412550 Size: SH
  1. Install NEW exhaust manifold studs, if necessary.

    2. Tighten
    Tighten the studs to 10 N·m (89 lb in).


    Object Number: 1179623 Size: SH
  2. Install the exhaust manifold gasket.
  3. Install the exhaust manifold and catalytic converter assembly to the cylinder head.
  4. Install NEW exhaust manifold to cylinder head retaining nuts finger tight.

    5. Object Number: 1340643 Size: SH
  5. Tighten the NEW exhaust manifold cylinder head retaining nuts in sequence.

    6. Tighten
    Tighten the nuts a second time to 14 N·m (124 lb in).


    Object Number: 1877291 Size: SH
  6. Coat the threads of the oxygen sensor with anti-seize compound GM P/N 12397953.
  7. Install the oxygen sensor.

    8. Tighten
    Tighten the oxygen sensor to 42 N·m (31 lb ft).


    Object Number: 825111 Size: SH
  8. Install the block heater and bolt, if equipped.

    9. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1877290 Size: SH
  9. Install the exhaust manifold heat shield.
  10. Install the exhaust manifold heat shield bolts.

    11. Tighten
    Tighten the bolts to 23 N·m (17 lb ft).