2003 GMC Sierra 1500 Pickup Owner's Manual - Page 445

Taillamps (Chassis Cab Models) Replacement Bulbs I Exterior LamD Low-Beam Headlamps I Bulb Number I ~~ ~~ ~ A. Turn Signal Lamp B. Stoplamp C.Back-upLamp 1. Using your hands, peel the rubber seal away from the lens. 2. Lift the lens off the lamp assembly. 3. Pull the old bulb straight out from the socket. 4. Put a new bulb into the socket and press it in until it is tight. 5. Reinstall the lens and the lens seal. 9006 9005 Hiah-Beam He Daytime Running Lamps (DRL) 41 57K Front Roof Marker Lamps 194 I Front Parkina and Lamo I 3457A I " Turn Rear Marker Lamp, Taillamp and 3157 Stop Lamp** 11157 Taillamo and Stoo Lama** I Sidemarker Lamp ( I f Equipped) I194 I Rear Turn Lamp 3157 1156 Rear Turn Lam ** Lamp I Back-up I 3157 I Back-up Lamp** 1156 Center Hiqh-Mounted Stoplamp 912 912 Cargo Lamp 194 Fender Marker * For any Bulb not listed here, contact your dealer. ** Chassis Cab Models I I ~ ~~ I 5-70