We've used GT inports in Riverside, they are close to the tyler mall.
the staff from the san bernardino dealership moved with it to Ontario, and I'm not clear on how the overall quality of service is now. (they were good back when they were the dealership in san bernardino, if pricey, but the customer experience in Ontario was not favorible for a while after the move, then they realized it needed to be improved and they did improve, but I can't tell you if they have held onto the improvements.)

If you want to trvel to huntington beach, my parents still travel to trinity european there from riverside. There's an indy I've driven by in highland off of baseline who always seems to have a mix of used volvos out for sale but I've never been in or talked to them.

I've used A&B off of 5th in San Bernardino, and they advertise as volvo specialists they can run to the pricey side of things, I haven't used them much but I've seen some rather high estimates on a co-workers car from them