Yes, there are a few GMC dealers in Toronto, Ontario. There are acually three of them. All three of these GMC dealers sell both new cars as well as used cars.
Yes, there is a Jeep dealer located at 150 Rexdale Boulevard West, as well as 5476 Dundas Street West. There are others in the Greater Toronto, Mississauga, Woodbridge, Richmond Hill, & Newmarket...