2008 Chevrolet Cobalt Owner's Manual - Page 281
2008 Chevrolet Cobalt Manual
Page 281 highlights
To replace one of these bulbs: 1. Open the hood. See Hood Release on page 5-11 for more information. 5. Pull the headlamp assembly up on an angle and towards the radiator to remove it. 6. Disconnect the bulb base from the wiring harness by lifting the plastic locking tab. 7. To replace a headlamp bulb, do the following: 7.1. Disconnect the wiring harness from the bulb socket. 7.2. Remove the black retainer by turning it counterclockwise. 8. Turn the bulb socket for the headlamp, front turn signal, or parking lamp counterclockwise. For the sidemarker bulb, use a tool to assist in turning the bulb socket. 9. Pull the old bulb out of the socket. 10. Install a new bulb. 11. Reinstall the bulb assembly by reversing Steps 1 through 8. When reinstalling the headlamp assembly, first make sure that the wiring harness is in its original position. If not, the headlamp assembly will not fit correctly. Align the two tabs on the bottom of the assembly that fit into two slots in the headlamp assembly bracket. 2. Remove the two hex bolts from the headlamp assembly. 3. Remove the two plastic fasteners from the fascia. 4. Pull the front fascia back. You might need someone else to assist you with Steps 3 and 4. 5-43