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 Owners Manual. When It Is Time for New Tires
Various factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road conditions
influence when you need new tires.
One way to tell when it is
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or ...