GM Service Manual Online
For 1990-2009 cars only

To replace a back-up lamp, do the following:

  1. Open the trunk lid and locate the back-up lamp assembly on the trunk lid.
  2. Gently remove the bulb from the socket by turning it counterclockwise and pulling it out.
  3. Replace the bulb in the socket by aligning the tabs and turning the bulb clockwise.