None that come to mind.
St Louis built both passenger cars and truck (and Corvettes) but I believe they were separate facilities.
Oshawa also built both passenger cars and trucks, but I believe that was also separate facilities.
When I started at Flint they built Pickups on Line 1 (60 jobs per hour) and Blazer/Suburban on Line 2 (36 jobs per hour). We were the only plant producing GM SUVs at the time.
The area between the two final lines was called "the Main Aisle" and that's were all of the plant tours and public festivities took place.
For more Flint Assembly pics see:
http://www.73-87.com/7387info/Assembly%20Line.htm
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K