There are 2 owner-reported suspension complaints for the 2021 Chevrolet Suburbanin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
There is an electronic problem that continues to trip the warning for the Air Ride suspension system to fail leaving the vehicle stuck at its current ride height or it drops eithee the front or rear suspension to the ground while simultaneously raising the front or rear to its highest setting. It also causes the vehicle speed to drop immediately to 56 mph. Issue has been scanned by several dealers to determine air leaks, pinched wires, failing compressor and all were found to be in normal operation. This is a huge safety concern as well as a huge financial concern for the consumer.
I bought the vehicle on January 11, 2025. Within 2 weeks the service leveling system indicator light came on the dashboard. The vehicle's front left air suspension system was not working properly and the vehicle lowered to the crash shield. The vehicle would not go over 55 miles and hour and was bouncing all over the road. The vehicle went back to the dealership and they reset and calibrated it. A few weeks later, the same thing happened. The vehicle again went down in the front, and was unsafe to drive. The dealership had the vehicle for 3 weeks, had difficulty assessing the situation and changed the front left air suspension arm. They told us it was fixed. We picked it up and as we were driving it home the service leveling system indicator came on, we brought it right back. They had the vehicle another 2 weeks and changed the solonoids, reset and recalibrated and had us pick it up. Within a few weeks the same thing happened, but worse. As I was driving it, an explosion sounded from the vehicle and the whole entire front of the vehicle lowered to the crash shield, making it extremely unsafe to drive. I have asked for the dealership to get a certified mechanic from GM to come and look at the vehicle and to start the repurchase process, no one is getting back to us and the vehicle is unsafe to drive.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026