
To replace a back-up lamp bulb: 1. Open the trunk. See Trunk.
2. Locate the back-up lamp bulb assembly in the trunk lid.

3. Turn the bulb socket counterclockwise and pull it out of the lamp assembly.
On vehicles that have a back-up lamp cover, first remove it by pressing the tab at the top.
4. Pull the old bulb straight out of the bulb socket.
5. Push the new bulb straight into the bulb socket until it clicks.
6. Push the bulb socket into the lamp assembly and turn it clockwise to lock it into place.
Taillamps, Turn Signal, Stoplamps and Back-up Lamps (Sedan)
License Plate LampChevrolet Cobalt Owners Manual. Taillamps, Turn Signal, Stoplamps and Back-up Lamps (Sedan)
To replace one of these bulbs:
1. Open the trunk.
2. Remove the trunk trim and pull back fastener.
3. Remove the additional fastener.
4. Remove the outer two screws from the taillamp
assembly.
5. Lift up on the tab and pull the wiring harness
straight out.
6. Remove the taillamp assembly fro ...