I have used all my trucks for picking up hay with a 25ft goosneck, the ones with an auto and 4x4 always went in low 2wd, the only 2wd truck I had " 1999 cummins auto " i installed a tripple disc billet converter and a derail trans cooler, you had to drive with one eye on the trans temp because as the load got heaver the temp got hot.
Never owned another 2wd after that because of not having low range, all the other trucks " all cummins powered " that were auto were just fine in 2wd low, and this is pulling 180 square bails or 12 round bails of hay in a soft field.