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. Rear Compartment Lid Hinge
Removal
1.
Raise and support rear compartment
lid.
2.
Remove compartment lid hinge bolts
(2), Fig. 1.from hinge.
3.
Remove compartment lid hinge nuts (1)
from decklid studs.
...