Had my 19 Trailhawk for a couple of months now, and only had to fill it up once, since we're not driving much due to COVID. Filled up at Costco, so figure the pumps are probably pretty new, and well maintained. Had this issue as well (nozzle kept clicking off). I was able to make it stay on by turning the nozzle upside down, but then I have to hang onto it the whole time, afraid it will fall out and spew gas all over and/or hit the side of the truck when it falls out. About to go on a cross country trip with our GC, sure hope this isn't going to be a normal occurence.
Keith
Keith