GMC 2001 Envoy - Manual (Page 348)

6-41
Taillamps
1. Open the endgate/liftgate.
2. Remove the two screws
from the lamp assembly.
3. Pull the assembly away from the vehicle.
4. Turn the socket counterclockwise to remove it.
Push the tab in while you turn the
socket counterclockwise.
5. Holding the base of the bulb, pull the bulb straight
out of the socket.
6. Push the new bulb straight into the socket until
it clicks.
7. Put the socket into the assembly and turn the socket
clockwise until it locks in place.
8. Install the lamp assembly and tighten the screws.
9. Close the endgate/liftgate.