GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2008 🢒 Enclave 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Intake Manifold Disassemble

Upper to Lower Intake Manifold Disassemble Procedure

    Object Number: 1864247 Size: SH

    Important: Do not reuse the upper-to-lower intake manifold gasket and the intake manifold-to-cylinder head sealing gaskets.

  1. Remove the upper-to-lower intake manifold bolts.

    2. Object Number: 1864248 Size: SH
  2. Remove the fuel injector wiring harness bracket bolt from the upper intake manifold.

    3. Object Number: 1864249 Size: SH
  3. Remove the upper intake manifold from the lower intake manifold.

    4. Object Number: 1864250 Size: SH
  4. Remove and discard the upper-to-lower intake manifold gaskets.

Upper Intake Manifold Disassemble Procedure

    Object Number: 1864251 Size: SH
  1. Remove the manifold absolute pressure (MAP) sensor bolt.

    2. Object Number: 1864252 Size: SH
  2. Remove the MAP sensor.

    3. Object Number: 1864254 Size: SH
  3. Remove the throttle body bolts.

    4. Object Number: 1864255 Size: SH
  4. Remove the throttle body.

    5. Object Number: 1864256 Size: SH
  5. Remove and discard the throttle body gasket.

    6. Object Number: 1864257 Size: SH
  6. Remove the intake manifold tuning valve bolts.

    7. Object Number: 1864258 Size: SH
  7. Remove the intake manifold tuning valve.

    8. Object Number: 1864259 Size: SH
  8. Remove and discard the intake manifold tuning valve O-ring.

    9. Object Number: 1864260 Size: SH
  9. Remove the fuel injector sight shield ballstud.

Lower Intake Manifold Disassemble Procedure

    Object Number: 1864261 Size: SH
  1. Remove the fuel injector wiring harness.

    2. Object Number: 1864262 Size: SH
  2. Remove the fuel injector rail bolts.

    3. Object Number: 1864263 Size: SH
  3. Remove the fuel injector rail.

    4. Object Number: 1864264 Size: SH
  4. Remove the upper-to-lower intake manifold alignment pins.