Use only lukewarm or cold water, a soft cloth and a car washing soap to clean exterior lamps and lenses.
Follow instructions under Washing Your Vehicle.
Washing Your Vehicle
Finish CareChevrolet Cobalt Service & Repair Manual. Front Side Marker Lamp Bulb, Replace
1.
Remove headlamp bracket assembly.
2.
Rotate marker lamp bulb harness electrical
connector (1) counterclockwise to unlock from headlamp assembly,
Fig. 1.
3.
Remove front side marker lamp bulb
(2) ...