GM Service Manual Online
For 1990-2009 cars only
  1. Remove the headlamp assembly. Refer to the removal procedure earlier in this section.
  2. Turn the bulb assembly retainer and pull out the bulb.
  3. Unclip the bulb assembly from the wiring harness.
  4. When replacing the bulb, be sure to properly align the bulb with the locating feature in the assembly.
  5. Reverse Steps 1 through 3 to reinstall the bulb assembly.