D type

looking for a source for a driver door seal -- dealer tells me there not made ?

donbrew

Here is one of many on eBay
Chevrolet GM OEM HHR Front Door-Weatherstrip Weather Strip Seal Left 19207495 | eBay

or this on eBay.ca
http://www.ebay.ca/sch/i.html?_from=...07495&_sacat=0

Once you get the part number from an online GM parts site it's easy. You could also see if one of those sites has them in stock, most of the eBay vendors are GM dealers.

Casa Del Gatos

You need to find a different dealer to "deal with."
That one either cannot be trusted or is too lazy to be worth using.