Most motor vehicles, including this one, contain and/ or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Engine exhaust, many parts and systems, many fluids, and some component wear by-products contain and/or emit these chemicals.
 Accessories and Modifications
Accessories and Modifications California Perchlorate Materials Requirements
California Perchlorate Materials RequirementsChevrolet Cobalt Owners Manual. Engine Air Cleaner/Filter (2.0L Turbo Engine)
  		See Engine Compartment Overview
Engine Compartment Overview for the location of the
engine air cleaner/filter.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the Maintenance II
intervals and replace it at the first oil change after
each 50,000 mile (80 000 km) ...