Yet to have found anything to prevent the rear sag when towing and not even close to 8000 lbs how chevy can advertise that is wild. Any owners out here near Michigan? Spoke to airlift and they want to see what they can do for a product as plenty need and would use it. If you're local they want a vehicle to look at and you probably get the products for free said and done.

Anyone else come up with other solutions? Seems like 2 years later with the amount that tow we would have a solution by now. 5500 lb boat sags the rear like im towing 20000 lbs. No issues with stability towing or power but that's gonna strain the rest of the suspension comments and steering components over time. Tow far enough its worth figuring it out or replacing with the air suspension. I'm like the others that thought the IRS coming from Toyotas etc hinking it would have a coil and separate shock not coil over. Love everything else about this ride and the mpg but common chevy you gotta do better advertising 8000lbs or put air ride in the rear of these standard

 

Are there air-adjustable shock absorbers available for the rear?

I've used Gabriel Hi-Jackers on the rear of my old VW for 2 decades now, to lift its rear end.

 

this is for the silverado and the site has one for a police tahoe
Kit Search - Airide Automotive Aftermarket (firestoneairide.com)