In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors.
Call 1-800-222-1020, or write:
Chevrolet Motor Division
Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
In Canada, call 1-800-263-3777 (English) or
1-800-263-7854 (French), or write:
General Motors of Canada Limited
Customer Communication Centre, CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Chevrolet Cobalt Service & Repair Manual. Valve Cover, Replace
Removal
1.
Loosen vent hose clamp at air cleaner
resonator, air cleaner intake duct clamp at air cleaner outlet resonator.
2.
Loosen air cleaner outlet resonator
to throttle body clamp, located forward of accelerator cable bracket ...