GM has communicated to dealers the changes related to the shortages of chips. Yes, heated seat and heated steering wheel, parking assist will not be complete.
GM informed the dealers that when chips are available, they will be paid to install them to make these options function.
The Flint HD plant continues to build, and Oshawa is now building HDs as well. Based on the supply chain, and the options, timing varies. It appears that getting your vehicle may be like the lotto. If all the parts line up on that day, and the transports are empty, you win. Someone in CA got a Black 2500HD Dmax that was built, shipped and delivered in January. Others not so lucky.
My truck that was built in October is still in Flint, and I am only 50 miles away. I am waiting on that truck because the heated steering wheel and heated seats were installed (although it may be warm by time it is delivered), and it has the park assist.
I believe that there are many suppliers hiring in the Flint Mi area in case anybody is looking for a job.