We live in a smaller community of around 30K, so the dealer is fairly small. I took our 2016 2250 Sunseeker in for the recall on the drivers side window switch, and they balked at the fact it was a motorhome.
I stated it is an issue with the GM chassis, and that it can be done in the parking lot - it does not need to be put on a lift! They accepted that, and ordered the replacement. When I dropped it off to have the work done, some of the workers were wondering how they were going to work on the unit... per the fella that picked me up at home when the work was done.
I've had the same issue with Ford when the front calipers seized on our 2000 Four Winds. They finally decided to do the job when I threatened to take it to the CHEVY dealer just down the road.... In that case, they pulled the nose into a bay, then jacked it up with floor jacks. $500 & two new calipers, rotors and pads later, we were rolling down the road.
Al ItsyRV stated, you can locate a commercial dealer here:
https://www.gmfleet.com/locate-a-dealer.htmlWhile they don't show the Safari/Savanna 3500/4500, select "Silverado 45/55/6500HD Sales & Service", which will fit the bill.
2016 Forest River Sunseeker 2250SLEC Chevrolet 6.0L