Here is a park with camping just north east of Vancouver. A friend likes it but I haven't been there yet.
http://www.env.gov.bc.ca/bcparks/explore/parkpgs/golden_ears/
Ellen & Greg
08 National Dolphin DL-35Ci, Kelderman Air Ride, Rear Trac Bar
Workhorse W22, RoadMaster Rear Sway Bar, Towing 08 Smart Car