That is a Carefree awning. Had one on my '04 Cruiser and one of the gas struts failed the same way. Dealer replaced the strut under warranty. As I recall, they had to drill a hole thru one side of the arm in order to drill out the old rivet. These struts are pretty strong, like 80 or 100 lbs, so it wasn't a one person task, working over your head (or on a ladder) trying to line up the new strut and pin while fighting the other arm as well. Cost of a new strut plus labor is probably not that much, but I doubt CR would cover it. Carefree might offer some help, if not I'd ask the dealer to split the cost with you, you pay for the parts and he donate the labor.
One more point, these struts are different than most, they use an eyelet end rather than the typical ball end and may only be available from Carefree.
Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK