I loaded with dirt bags inside my yr 18 tahoe rst the suspension went down a lot in rear

[Doubeleive]

When I hook up my 6,000 pound travel trailer I hear the compressor running to get it level. I had purchased an LT trim (over the Premier) specifically for the Air Leveling because the dealer said the Premier didn't have it since it has the Magnetic Ride Suspension.

dealer was full of crap, unless they magically changed something in 2015 my 2012 has mrc and autoride/autolevel