GM Service Manual Online
For 1990-2009 cars only

Exhaust Manifold Replacement LLV

Removal Procedure

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

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 953934  Size: SH
  1. Remove the exhaust seal. Refer to Exhaust Seal Replacement.
  2. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.
  3. Remove the exhaust manifold bolts.

  4. Object Number: 953937  Size: SH
  5. Remove the exhaust manifold and the gasket from the engine. Discard the gasket.

Installation Procedure


    Object Number: 953937  Size: SH
  1. Place a NEW exhaust manifold gasket on to the cylinder head.

  2. Object Number: 953934  Size: SH
  3. Position the exhaust manifold to the cylinder head.
  4. Apply threadlock GM P/N 12345493 (Canadian P/N 10953488) to the exhaust manifold bolt threads.
  5. Install the exhaust manifold bolts.
  6. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 954227  Size: SH
  7. Tighten the exhaust manifold bolts in sequence to 20 N·m (15 lb ft).
  8. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.
  9. Install the exhaust seal. Refer to Exhaust Seal Replacement.

Exhaust Manifold Replacement LLR

Removal Procedure

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

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.


    Object Number: 858158  Size: SH
  1. Remove the exhaust seal. Refer to Exhaust Seal Replacement.
  2. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.
  3. Remove the exhaust manifold bolts.

  4. Object Number: 858159  Size: SH
  5. Remove the exhaust manifold and the gasket from the engine. Discard the gasket.

Installation Procedure


    Object Number: 858159  Size: SH
  1. Place a NEW exhaust manifold gasket on to the cylinder head.

  2. Object Number: 858158  Size: SH
  3. Position the exhaust manifold to the cylinder head.
  4. Apply threadlock GM P/N 12345493 (Canadian P/N 10953488) to the exhaust manifold bolt threads.
  5. Install the exhaust manifold bolts.
  6. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 858367  Size: SH
  7. Tighten the exhaust manifold bolts in sequence to 20 N·m (15 lb ft).
  8. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement.
  9. Install the exhaust seal. Refer to Exhaust Seal Replacement.