Cadillac DTS Air Ride System Failing After 156K KM

Had similar symptoms on my 2007 Cadillac CTS with the adaptive suspension system. The issue turned out to be a faulty damping control module with damaged wiring connections. This caused the shock absorber system to default to its firmest setting, creating that harsh ride you described. The suspension tuning issue was triggered by corroded connector pins at the control module. Vehicle suspension diagnostics revealed multiple error codes related to the electronic damping system. The fix required replacing the wiring harness and cleaning the connection points for proper communication between components. While not a catastrophic problem, leaving it unfixed can lead to premature wear of suspension components. The car damping system needs all sensors and connections working properly to adjust ride comfort. In my case, the entire repair process took around 4 hours at the shop. Key warning signs were: Warning light activation, Consistently firm ride, Error codes related to damping control, No variation in suspension feel over different road surfaces Best to have it checked soon, as continued driving with faulty damping control can stress other suspension parts.

Thanks for sharing that, it sounds exactly like what I experienced with my DTS. The car handling has been much better since getting it fixed. Did you happen to remember the total repair cost? I am curious how it compares since I had to replace both front shock absorbers along with the control module. Also wondering if youve had any other suspension-related issues pop up since the repair was done?

Thanks for asking. My repair was much simpler than yours, it turned out to be just a damaged cable and plug connection to the damping control module. The total cost was 95€ for the fix, which mainly involved reconnecting and securing the wiring properly. The car handling and ride comfort returned to normal immediately after the repair. Since having the damping adjustment fault fixed last year, the suspension system has been working perfectly. No other suspension-related issues have emerged. The shock absorber system is adjusting properly now, and the warning light hasnt returned. Sounds like your case required more extensive work with the full replacement of components, which explains the higher repair cost. Its important to address these electronic suspension problems quickly, as faulty connections can sometimes be fixed before they lead to actual component failure. Regular suspension system checks can help catch these issues early.

I took the car to my mechanic last week, and the total repair came to 850€ for replacing both front shock absorbers and the damping control module. The car handling is back to normal now, the ride is smooth again and that annoying warning light is finally gone. The whole repair took about 6 hours, but it was worth the wait. My mechanic showed me the old parts, and the shock absorbers were clearly worn out. There was visible fluid leakage and the electronic connectors were pretty corroded. The suspension issue turned out to be more extensive than just a wiring problem, but at least now I know what warning signs to watch for in the future. No other issues have come up since the fix, and the car damping system is working exactly as it should. The difference in ride quality is like night and day. Definitely glad I got it sorted before it caused more damage.