2021 Cadillac XT6 owner complaints
21 complaints filed with NHTSA, including 0 crashes, 0 fires, 0 injuries and 0 deaths.
Problems by component
Forward Collision Avoidance2 Engine and Engine Cooling1 Recent complaints
October 20, 2026Engine
I noticed a water sloshing sound behind the dash when first starting out for about a month. I didn’t get any warning lights or notice anything leaking under the car but when I checked under the hood the coolant reservoir was empty. I made appointment at GM dealership and they found I had a leak along the side seam of my radiator. The car only has 61k miles! I found online that GM has noted a structural design issue in my XT6. The radiators were engineered with tight thermal break tabs. If they stay locked in place they trap immense physical stress during engine heat cycles and force leaks along the seams. This appears to be what happened. If it had occurred while we were on a trip and totall
October 13, 2026SteeringEngine
DTC P0128 engine coolant thermostat to open at a lower temperature than intended. The Check Engine Light appeared, a Steering warning appeared on my information screen, and the engine cooling fan continued to run excessively after turning off. I understand there is a Special Coverage N252508350 for this exact issue, however, GM is refusing to cover the cost of repairs.
October 11, 2026SteeringElectrical System
On September 15,2026, my vehicle experienced a catastrophic los of power steering assist accompanied by severe heavy steering. Please review General Motors TSB 20-NA-215 & TSB 17-NA-158 both addressing this issue. My 2021 vehicle has a build date of September 19, 2020 which falls "directly" in the time frame covered by these bulletins. Essentially, General Motors KNEW of the problem! The only warning I got was a two second message flashing across the instrument panel stating "Power assist reduced, drive with caution" ... followed by "Service Power steering" Then severe loss of steering!! Again, General Motors KNEW of this problem! Ultimately, the Power steering Gear assembly was replaced at
July 1, 2026Fuel/Propulsion System
Your site shows no recalls. I got a recall for a repair I had to have done a few months ago. I just got the recall notice from GM, but when I called to inquire about a reimbursement, they state the recall was released in 10/2025. Even though your site says there was no recall at the time.
March 12, 2026Back Over Prevention
The contact owns a 2021 Cadillac XT6. The contact stated that while reversing, the rear-view camera intermittently displayed a blank image. The vehicle was taken to the dealer, who was unable to duplicate the failure and informed the contact that the contact had to pay for the rear-view camera software update. The vehicle was not repaired. The dealer informed the contact that the vehicle was previously repaired under NHTSA Campaign Number: 22V709000 (Back Over Prevention). The manufacturer was made aware of the failure. The failure mileage was approximately 33,000.