Stuck in OKC

Hi OKC locals! Driving home to AZ from NJ and our truck is stuck in 4 low. My fiance has tried numerous fixes found in various forums and nothing is working. Of course, it’s a Saturday and there’s basically zero performance or off road shops open and we really don’t want to get taken advantage of at a dealership because it’s an emergency and they know they can.

Seeking any and all advice on this as I want to go home 😭 we have our 12 year old dog with us and he’s over the cold and hotel stays. Also, for reference it’s a 2014 Silverado 1500.