WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying EVAP Canister & Push Pin
Courtesy of DAIMLERCHRYSLER CORP.
1 - PUSH PIN
The canister mounts (1) to a bracket on top of the fuel tank in the rear of the vehicle. The vacuum and vapor tube connect to the top of the canister.