2003 GMC Envoy Owner's Manual - Page 347

3. Pull the assembly away from the vehicle. 7. Push the new bulb into the socket mtil it clicks. 8. Reinstall the socket and screws. 9. Reconnect the wiring harness. IO. Reinstall the lamp assembly and ti hten the screws. 11. Close the liftgate. Replacement Bulbs Exterior Lamp I Number Bulb 4. Unclip the wiring harness (A) and remove the three socket retaining screws (B). 5. Remove the socket by releasing the retaining tabs. 6. Holding the socket, pull the bulb to release it from the socket. Low Beam High Beam HB3 9005 194 Front Sidemarker Lamps 3457 Front Turn Signal Lamps 3057 Tail and Stoplamps 3057 Rear Turn Signal Lamps For any bulb not listed here, contact your dealer. 5-52