To be certain, you'll want to:
* Consult your owner's manual: This is the best source for the exact location of components on your specific vehicle.
* Use a repair manual or online diagrams: Websites like Haynes or Chilton offer repair manuals with diagrams showing component locations. You can often find diagrams online as well by searching for "2006 Chevy Cobalt EVAP canister location."
* Search online forums: Chevy Cobalt owner forums often have discussions about repairs and component locations; searching for "EVAP canister location 2006 Cobalt" might yield helpful information and pictures from other owners.
Remember to be cautious when working under your car; use jack stands for safety and wear appropriate safety gear.