GM Service Manual Online
For 1990-2009 cars only

Center Intake Manifold Replacement LBZ, LLY

Removal Procedure

  1. Remove the air cleaner. Refer to Air Cleaner Replacement .

  2. Object Number: 1335575  Size: SH
  3. Remove the exhaust gas recirculation (EGR) valve cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  4. Remove the intake manifold tube by prying the tube out of the center intake manifold dowel pin.
  5. Remove the turbocharger. Refer to Turbocharger Replacement .

  6. Object Number: 1335931  Size: SH
  7. Remove the center intake manifold bolts/nuts.
  8. Pull-up the center intake manifold in order to remove.
  9. Remove and discard the gaskets.
  10. Clean the center intake manifold in cleaning solvent and air dry.

Installation Procedure


    Object Number: 1335931  Size: SH
  1. Install NEW center intake manifold gaskets.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the center intake manifold.
  4. Install the center intake manifold bolts/nuts.
  5. Tighten
    Tighten the bolts/nuts to 10 N·m (89 lb in).

  6. Install the turbocharger. Refer to Turbocharger Replacement .
  7. Inspect the 2 O-rings on the manifold tube. Replace if damaged.

  8. Object Number: 1335575  Size: SH
  9. Install the intake manifold tube over the dowel pin.
  10. Install the EGR valve cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  11. Install the air cleaner. Refer to Air Cleaner Replacement .