GM Service Manual Online
For 1990-2009 cars only
  1. Remove the wiring harness channel bolts.
  2. Remove the wiring harness channel and position out of the way.
  3. Remove the vacuum line clamps from the crankcase vent tube adapter.
  4. Remove the vacuum lines from the crankcase vent tube adapter.

  5. Object Number: 345356  Size: SH
  6. Remove the intake plenum bolt covers.
  7. Remove the intake plenum bolts.
  8. Remove the intake plenum.
  9. Remove the intake plenum seals.