2004 Chevrolet Astro Owner's Manual - Page 269

4. Press the tab and turn the socket counterclockwise to remove the socket from the bezel. If the socket does not have a tab, turn the socket counterclockwise to remove the socket from the bezel. Replacement Bulbs Exterior Lamp Bulb Number Back-Up Lamps 1156 Halogen Headlamps Composite 9005 (High Beam) Halogen Headlamps Composite 9006 (Low Beam) Halogen Headlamps Sealed H6054 Beam Parking, Turn Signal Lamps 3157NA Rear,Stoplamps 2057 Sidemarker Lamps 194 For any bulb not listed here, contact your dealer. 5. Remove the old bulb from the socket and replace it with a new one. 6. Reverse Steps 1 through 4 to reinstall the taillamp. 5-55