Trouble reading reports, fuel vapor return problem, probable causes listed below on 2008 Saturn Outlook

the autozone readout- refers to loose connection, vapor canister problem, vapor return sensor / solenoid problem. I have checked the vapor return solenoid at the intake manifold connect appears good. I could immediately locate vapor canister, it appears to be above fuel tank, is this true?
Could you help provide feed back without having to buy all parts. Gas cap has been changed recently.

Asked by for the 2008 Saturn Outlook
dont buy anything until the issue is identified. you need a shop with a scan tool, smoke machine and voltmeter to determine the failed part.