GM Service Manual Online
For 1990-2009 cars only
  1. Disconnect the EVAP hose for the ORVR.
  2. Disconnect the brake booster vacuum hose.
  3. Remove the oil dipstick guide bolt.
  4. Remove 2 bolts and 1 nut from the intake manifold bracket.

  5. Object Number: 828279  Size: SH
  6. Remove the intake manifold bolts and nuts.
  7. Remove 2 bolts from the alternator bracket.
  8. Remove the intake manifold and gasket.