Caution: Do not remove any component of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life. |
The vehicle emission control information (VECI) decal shows components of the emission control system, the correct vacuum hose routing and the color stripe of the vacuum hoses. |
A visual inspection must always be performed to confirm the presence of aftermarket components, potential collision damage, or areas of concern. |
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Chevrolet 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 ...