Hi, OP here...
Weird that others have had this upselling issue also. Once again, this is unsettling, especially just before our route 66 adventure in a couple of weeks.
They DID relent on the 'customer declined needed repairs" issue.
But they still maintain that the part for the seat heater repair is months away. Would have been nice to have it for our trip.
We will be stopping where we bought the car (Bloomington IL) on one of the first days of the trip so we will see what THEY think.
Not impressed with the Elgin IL dealership. Very inclined to send the aforementioned letter just before we leave anyways. Customers should be treated with a minimum of respect, IMHO.