Po455
P0455....Evaporative Emission Control System Leak
Detected (gross leak). This could be as simple as a bad gas tank cap. Just remove it and if the seal on cap is good, put it back on. tight,and the light may go out. Unless you have a leak some where else!
SOURCE: 2005 Chevrolet Equinox Vapor Canister
locate the fuel tank under the rear of the vehicle, just ahead of it you will see a rectangular plastic box with a few lines connected to it. it is the vapor canister. Remove the canister, the two wire plug that you will have to disconnect is attached to the vent valve which is what i believe you are referring to. grasp the valve and rotate it counter clockwise and pull up to realease it, and reverse procedure to install the new one..
SOURCE: where is the fuel vapor canister located on a 2000
The vapor canister is located under the vehicle near the fuel tank.
It is made out of black plastic and has plastic lines running to it.
SOURCE: LOCATION OF VAPOR CANISTER PURGE
Your best to have a Repair Shop properly diagnose the
entire EVAP System
You may not need a Purge Valve
They will use an EVAP Smoke Machine and
Scanner to do the job correctly
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