GM Service Manual Online
For 1990-2009 cars only

Intake Manifold Removal RPO LH6/LMG/LY5/LC9/L76


    Object Number: 1658148  Size: SH

    Important: 

       • The intake manifold, throttle body, fuel injection rail, and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly.
       • DO NOT use the intake manifold-to-cylinder head gaskets again.

  1. Remove the positive crankcase ventilation (PCV) hose - dirty air (716).

  2. Object Number: 1401987  Size: SH
  3. Remove the manifold absolute pressure (MAP) sensor (714) and retainer (736), as required.
  4. Remove the O-ring (715) from the sensor, as required.

  5. Object Number: 1401989  Size: SH
  6. Remove the intake manifold bolts (512).
  7. Remove the intake manifold (500) with gaskets.

  8. Object Number: 1277097  Size: SH
  9. Remove the intake manifold gaskets (514).
  10. Discard the intake manifold gaskets.

Intake Manifold Removal RPO LY2/LY6/L9H


    Object Number: 1658148  Size: SH

    Important: 

       • The intake manifold, throttle body, fuel injection rail, and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly.
       • DO NOT use the intake manifold-to-cylinder head gaskets again.

  1. Remove the positive crankcase ventilation (PCV) hose - dirty air (716).

  2. Object Number: 1401987  Size: SH
  3. Remove the manifold absolute pressure (MAP) sensor (714) and retainer (736), as required.
  4. Remove the O-ring (715) from the sensor, as required.

  5. Object Number: 1403311  Size: SH
  6. Remove the intake manifold bolts (512).
  7. Remove the intake manifold (500) with gaskets.

  8. Object Number: 1277097  Size: SH
  9. Remove the intake manifold gaskets (514).
  10. Discard the intake manifold gaskets.