I have a 2015 Suburban and am looking to upgrade to the 2021 suburban and my bil is looking at the tahoe. We tow with our vehicles currently and they both have auto leveling suspension on an LT model. This option is a must for us, but don't want to go to the z71 or high country. I can't find any information on this option anywhere, but all the videos i have seen towing show that they are level. Can anyone help me out with any information on load leveling suspension? TIA