Welcome to Monaco owners!
The power shades have a fuse/breaker in the front run bay (outside below the drivers feet). It's on board 11, Fuse 4, 6 amps. (Ours is a small breaker but some are fuses). It powers both shades.
The relay is in the Intelletec system fuse board (usually in the rear closet). Should be Fuse 2, 5 amps.
More than likely they are Carefree of Colorado shades and the motors are bad. Try putting a voltmeter on the wires going to the shades.
The shades are installed with 2 screws, one on each end. Ours were square drive.
If you need new shades, I purchased ours from PPL as they had the best price and fast shipping.
Do you have two Dometic 5 button thermostats? If so, try reprogramming them. It's fairly easy. Slide the small black switch on the bottom forwards to off. Then hold down the top and bottom buttons while turning the switch on. You will see FF in the display.
Then release and try your A/C systems.
If this doesn't help, I think you are going to have to get into the load sharing relays and figure out if one or more is bad.
Do you also have a clothes dryer? Make sure it's off when trying the A/C systems.