Unbelievable how the poor design of rear air springs can just deflate while driving at any speed and when and if possible to pull over without causing an accident and shutting off the vehicle and restarting it will lift back up and can randomly just drop anytime. I can't afford to fix this problem because ive been spending too much money on it with other repairs. even the previous owner I contacted told me the compressor was replaced many times over the years. Is GM going to fix this problem without me paying for it. Or do I have to use lemon law? I can't pay for this repair. The suspension is not comfortable and feel everything on the road

Update from Dec 20, 2021: After owning the XTS4 premium I gotta say it was a beautiful car very nice and worth owning. The rear air springs aren't coil so the ride is very smooth and comfy. Expect to replace the rear air springs in 3-5 years its not that expensive and well worth it. I regret making such a bad complaint about that particular car. Its one of the best cars every made by GM.

I am the second owner of 2013 Cadillac XTS now at 76000 miles. 2 days ago while I was driving the rear of the car dropped to ground. I drove like that another 2 miles to my home. It was driving very bumpy. I parked the car and later It went back to normal, then it goes down again frequently. I checked for air leaks and found none, pump works normal. Today I changed the sensors to see if it will fix the problem, no it didn’t. But today reached out to a friend that repairs Cadillac’s and he told me that the problem is the leveling system needs to be replaced it’s very common in the XTS. After I fix it I’m selling the car. He says that problem never really gets fixed. Ain’t going be taking any more of my money.

I am the second owner of 2013 Cadillac XTS4 with 63000 miles. 2 months ago while I was driving the rear of the car dropped to ground. I drove like that another 20 miles to my home. It was like driving in a field on a tractor, bumpy. I parked the car and 30 minutes later I started it. It went back to normal but since then it goes down frequently. I checked for air leak and found none, pump works normal. Today I checked and the leveling sensor on the drivers side rear looks rusty. Passenger side looks good. I will change the sensors to see if it will fix the problem. In the meantime, if anybody starts legal action on GM, I am in.