GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement LE5, L61

Removal Procedure


    Object Number: 1631764  Size: SH
  1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.
  2. Remove the pre catalyst heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor 1 Replacement for the 2.0L engine or Heated Oxygen Sensor 1 Replacement for the 2.2L or 2.4L engine.
  3. Remove the catalytic converter. Refer to Catalytic Converter Replacement.
  4. Remove and discard the exhaust manifold nuts.
  5. Remove the exhaust manifold.
  6. Remove and discard the exhaust manifold gasket.
  7. Clean the sealing surface of the engine block.

Installation Procedure


    Object Number: 1631764  Size: SH
  1. Install a NEW exhaust manifold gasket onto the studs.
  2. Install the exhaust manifold.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 60046  Size: SH

    Note: Install the new exhaust nuts.

  4. Install NEW exhaust manifold nuts and tighten in the sequence shown to 14 N·m (10 lb ft).
  5. Install the catalytic converter. Refer to Catalytic Converter Replacement.
  6. Install the pre catalyst HO2S. Refer to Heated Oxygen Sensor 1 Replacement for the 2.0L engine or Heated Oxygen Sensor 1 Replacement for the 2.2L or 2.4L engine.
  7. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.

Exhaust Manifold Replacement LNF


Object Number: 1991888  Size: MF

Callout

Component Name

Preliminary Procedures

  1. Remove the turbo charger. Refer to Turbocharger Replacement.
  2. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.

1

Exhaust Manifold Nut (Qty: 10)

Caution: Refer to Fastener Caution in the Preface section.

Tip
Install NEW exhaust manifold nuts.

Tighten
14 N·m (124 lb in)

2

Exhaust Manifold

3

Exhaust Manifold Gasket

Tip
Discard the old gasket and install a new gasket.