If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying General Motors.
If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in individual problems between you, your dealer, or General Motors.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at 1-888-327-4236
(TTY: 1-800-424-9153); go to
http://www.safercar.gov; or write to:
Administrator, NHTSA
1200 New Jersey Avenue, S.E.
Washington, D.C. 20590
You can also obtain other information about motor
vehicle safety from http://www.safercar.gov.
Chevrolet Cobalt Service & Repair Manual. Engine Rebuild Specifications
Cylinder Head, Valve Guide, & Valve Seat
All Measurements Given In Inches
Unless Otherwise Specified
Engine (VIN) 1
Year
Cylinder Head Warpage Limit
Cylinder Head Height/Thickness
Valve Guides
V ...