So...i decided to revive this dead thread to hopefully shed some light on the traction control in sand debate.
This weekend i hit some ORV routes up by houghton lake MI with my 2017 Grand Cherokee. These routes consist of mostly soft sand, and since it hasnt rained in 3 weeks...it was like driving on talcum powder.
Im on crappy off brand street tires, and didnt even bother to air down. (I did bring 2 chains, a comealong, and 2 shovels just in case

)
This is a 5000lb mom-mobile SUV and i was absolutly amazed at how well the "sand" mode worked on the Quadra-TracII transfer case.
It scooted around bermed corners and pulled right up out of them with ease with just a little "errrnt errrnt" noise from the TC doing its thing.
I should add i never got over 15-20mph or out of 2nd gear...so i was by no means hammering it.
One of the hills was pretty steep with deep sand...feeling the engine cut power while having the wheels turned slightly while trying to climb was a bit unnerving at first, but it climbed it with zero drama and never once felt like it was gonna bury itself.
Stopping on soft sand at a crossing, just apply light throttle and it pulled right away after feeling a bit of sink.
Im old school as can be, and truthfully i was hoping it wouldnt do as well as it did just so i could blast it...but it impressed the hell out of me.
Im not sure how "purpose built" the GC is with its different terrain modes...but i will say anyone who doubts it give it a try. I know i doubted it
It was also nice crusing around without breatheing dust and roasting to death while we cruised with the AC cranked.
It pains me to say...but there might be something to this "wheel by computer" shit.