While I was on the road going home I noticed that my temperature was slowly rising then all of a sudden my engine room was smoking I pulled aside and looked at the engine room the smoke was caused by the radiator leaking on front top cover of radiator was cracked... don't get me wrong but I never did 4 wheeling on my Hummer I drive it for my everyday commute that's about it...upon checking on blogs of other Hummer owners they say its a common problem that's why I was amazed that it wasn't a part of any recalls I could have just imagined if im doing 4wheeling well anyways when I went to the dealership for repairs cause im confused also on their powertrain warranty cause the first sentence says radiator is included but the succeeding paragraphs says otherwise...since its a common known issue and believe me this the only part of Hummer that dealership stock in their inventory should it be in a recall notice or at least have GM review it cause the way I see why the crack on the radiator happened was because of the flaw of the design of radiator support the metal lip on it rubs on front top cover portion so eventually this will give in plastic vs metal we all know whose gonna win but did am general knows this....my answer definitely like what I had mentioned already and tried at least 15 dealership (from California to Texas to newjersey and Michigan)that caters to Hummer line all of them have one thing in common they stock radiators for Hummer H3S...

- Fresno , CA, USA