Bezel around the handle on the front, passenger side fell off. Brought it in and was told they would have to order the part. Had to leave the vehicle overnight. Got the vehicle back later the next day, but the bezel popped off yet again within a week. The passenger side door is used under 10 times per month so usual wear isn't the issue in my opinion.
Biggest complaint! The back rest on the driver's side is pushed out/forward on the left. Service dept at dealership told me it was a design flaw related to the side-impact airbag and couldn't do anything about it. The leasing company used by my employer has heard similar complaints from other leased drivers at my company. The seat below your legs is angled a bit to the left so you have to contort yourself to drive. This issue seems to be exclusive to the 2007.
Tranny has 'clunky' sound on acceleration. (This problem is mentioned several times in other threads I've read on-line).
I would be seriously furious if I had leased this vehicle personally. I drive for 7.5 hours at a time occasionally due to my sales job. It's costing me a fortune in massage therapy and the back/shoulder pain the seat causes is sometimes unbearable. I just hope the leasing company can hammer out an agreement with GM to correct the matter.
For a van, the look is nice enough, but I really think the Big-3 are their own worst enemies because they keep putting out product, such as the Montana SV6, that lacks attention to detail and pride of workmanship. I won't ever buy GM based on past experience with their vehicles.