Here is a part of what I found on Lear's web site:
"Production of the luxury vans starts at the GM Wentzville, Mo., assembly plant. The vans are shipped to the new UAW-represented Lear plant nearby, where Lear completes installation of the electronic and electrical distribution system, overhead system, flooring and acoustic system, seats and door panels. After exterior enhancements are installed, GM ships the finished vans to its dealers. As a result of this innovative program, the luxury vans will carry GM factory warranty coverage and can be serviced at any GM dealer."
If you would like to check it out for yourself go here:
If it doesn't take you right to it do a search for Express, and it will find it for you. It is under General Motors-Lear Partneship produces...
One other feature I like about the Express LT I did touch on before but did not explain is the re-configurability of the rear seating. You can removethe 2nd row captain chairs and replace them with the 3rd row bench, and install the captain chairs in the 3rd row position. I think you can even install the seats in the 3rd row backwards for a tailgate party or something, but can't confirm this, due to the other misinformation given to me at the auto show. But I do know you can move the bench and buckets, they did a demonstration, so I know at least that much can be done.