GM Service Manual Online
For 1990-2009 cars only
  1. Disconnect the fuel injection rail electrical connector.
  2. Important: Counterhold the fuel rail with a wrench when removing the fuel hoses to prevent damage to the fuel rail.

  3. Remove the fuel supply and return hoses from the fuel rail.

  4. Object Number: 217280  Size: SH
  5. Remove the intake manifold bolts (1).
  6. Remove the intake manifold (2).
  7. Remove the seals (3).