What is a vent solenoid for 2010 Chevy Camaro RS?
If your talking about the evos system,,, be located on or near gas tank,, usualy under the car over the rear axle,, square looking black plastic box with the valve bolted on the side, wires coming out,,and 2/3 rubber vent lines also could be in the trunk mounted behind the left or right fender panels,,, if its throwing a code for bad valve and the engine light is on i would also have the gas cap checked or try replacing it first,,,, it will make it do the same thing,, bad gas cap could be your problem and its cheap
been there done that tater