2008 GMC Envoy Owner's Manual - Page 345

Front Turn Signal, Sidemarker and Parking Lamps To replace one of these bulbs: 1. Follow Steps 1 through 3 under Headlamps on page 5-50 to access the front turn signal, sidemarker or parking lamp. 2. Turn the bulb socket counterclockwise and remove it from the lamp assembly. 3. Holding the socket, pull the old bulb to release it from the socket. 4. Push the new bulb into the socket until it clicks. 5. Insert the bulb socket into the lamp assembly and turn it clockwise to secure. 6. Reinstall the headlamp assembly by lining up the headlamp assembly with the slots in the headlamp retaining clips. 7. Press down on the headlamp retaining clips to secure the headlamp assembly. Taillamps, Turn Signal, and Stoplamps To replace a stoplamp/taillamp or turn signal bulb: 1. Open the liftgate. See Liftgate/Liftglass on page 2-12 for more information. 2. Remove the two screws from the taillamp assembly. 3. Pull the assembly away from the vehicle. 5-51