That sounds like a simple question but the answer is more complex. On the surface the answer is yes. I have an 8,000 capacity on the receiver of my Miramar. But you need to look at the weight limits in your manual for the capacities of you coach, not just tongue weight and towing limits. My guess is that you are fine.
Is it a full size Pickup or a Toyota Tacoma? My GMC 2500HD weights nearly 9,000#. The biggest concern I would have is whether the gas RV can handle that additional weight on the hills....depending on which truck you are talking about.
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
I had a 2013 Tacoma 4X4 that could not be flat towed unless you added a driveshaft disconnect. I believe the new Tacoma's have that same restriction.
Also, did some research on the new 2019 Ram and according to what I found, they could also not be flat towed so I went with a GMC Sierra instead.
__________________
Tom and Lisa
Pennsylvania
2015 Challenger 37TB
2015 Ford Taurus toad