EVAP Canister
Hey there, I just replaced mine on my 05 Jimmy. It's in a tough spot, it's at the front of the gas tank and right above the rear chassis. It's tricky to get to, just follow the airline that runs in front of the tank. You might have to break off the clip that holds it, as it's probably rusted. I just used a tie wrap to hold the new one on. Hope this helps. If you have any other questions, just ask.
Dan