Happy Hummer
2006 H3...Started to have strange symptoms which culminated in a P0449 code being thrown. This code is directly related to the Solenoid Vent EVAP located at the rear axle area against the canister. Here are just some helpful items found.
I have not tried any of these actual parts to verify that they will fit each model year. Lol! We have an 06 & 07. For the 06 after multiple hours of searching was able to come to the conclusion that the AutoZone PV428 (O.E.M. part no. 25932569) should fit with a simple piece of hose and a couple clamps. Otherwise the AC Del part no. 412-2147 or 412-2149 should work.
Original part no. 25948082 AC Del. 214-2241
New part no. 20907779
Original part no. 25932569 AC Del. 214-2147
AC Del. 214-2149
Original part no. 15208329 AC Del. 215628
AutoZone Parts Cross Ref. PV428 (PV485 special order)