GM Service Manual Online
For 1990-2009 cars only

Object Number: 1470028  Size: C1
  1.  (Voice Recognition) Key. See "Hard Keys" under Using the Navigation System for more information.

  2. SRCE (Source) Key. See "Hard Keys" under Using the Navigation System for more information.

  3. NAV (Navigation) Key. See "Hard Keys" under Using the Navigation System for more information.

  4.  /   (Audio/Screen Adjust) Key. See "Hard Keys" under Using the Navigation System for more information.

  5. SEEK (Seek/Tune) Key. See "Hard Keys" under Using the Navigation System for more information.

  6. Power Volume Knob. See "Hard Keys" under Using the Navigation System for more information.

  7. DVD (DVD Map Database Eject) Key. See "Installing the Map DVD" under Maps for more information.

  8. (CD Eject) Key. See " CD Player for more information.

  9. CD Slot

  10. DVD Map Database Slot

  11. Navigation System Screen

  12. (Open/Close Faceplate) Key. See "Hard Keys" under Using the Navigation System for more information.