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If equipped, this gauge is located near the driver side of the instrument panel cluster.
This gauge indicates vacuum during light to moderate throttle and boost under heavier throttle.
This gauge displays the air pressure level in the intake manifold before it enters the engine's combustion chamber.
This gauge is automatically centered at zero every time the engine is started. Actual vacuum or boost is displayed from this zero point. Changes in ambient pressure, such as driving in mountains and changing weather, will slightly change the zero reading.
Fuel Gauge
Reconfigurable Performance Display (RPD)Chevrolet Cobalt Owners Manual. Winter Tires
If the vehicle has 225/40R18 size tires, they are
classified as performance tires. These tires are
designed for very responsive driving on wet or dry
pavement. If you expect to drive on snow or ice
covered roads often, you may want to get winter tires
for the vehicle. All season tires provide g ...