GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1310037  Size: SH
  1. Remove the throttle body nuts (503).
  2. Remove the throttle body (502) and gasket (501).
  3. Discard the gasket.
  4. Remove the throttle body studs (504), if required.

  5. Object Number: 471023  Size: SH
  6. Remove the manifold absolute pressure (MAP) sensor bolt and MAP sensor.
  7. Inspect the MAP sensor seal for damage.

  8. Object Number: 471013  Size: SH
  9. Remove the evaporative emission (EVAP) tube.

  10. Object Number: 471015  Size: SH
  11. Remove the EVAP purge valve and bolt.
  12. Inspect the O-ring seal for damage. Replace as needed.