2021 Cadillac Xt6 problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (4) · Steering (3) · Back Over Prevention (3)
🧭 Reliability snapshot
Compared against other Cadillac Xt6 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (2)
Back Over Prevention: Sensing System: Camera 2022-09-22 · campaign 22V709000 · 95,231 vehicles
Defect: General Motors, LLC (GM) is recalling certain 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional Surround Vision feature. The rearview camera coaxial cable connectors may have been crimped improperly, causing the rearview camera to fail or function intermittently.
Risk: An inoperative rearview camera can reduce the driver's rear visibility, increasing the risk of a crash.
Fix: Dealers will replace the coaxial cables, free of charge. Owner notification letters were mailed January 18, 2023. Owners may contact Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222378380.
Fuel System, Gasoline:delivery:hoses, Lines/Piping, And Fittings 2021-06-03 · campaign 21V422000 · 572 vehicles
Defect: General Motors, LLC. (GM) is recalling certain 2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The fuel supply lines may be improperly attached and seated.
Risk: Improperly attached and seated fuel supply lines may loosen or separate, causing a fuel leak and increasing the risk of a fire.
Fix: Dealers will inspect and replace fuel supply lines as necessary, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Cadillac customer service at 1-800-458-8006 and GMC customer service at 1-800-462-8782. GM's number for this recall is N212335590.
Service bulletins (815)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-08-20 · PIC6551C · Service Bulletin/Repair Instructions
this preliminary information communicates to dealer to perform a mec reset for wireless projection issues
Unknown Or Other 2026-07-21 · PIT5099J · Service Bulletin/Repair Instructions
pi to help diagnose a/c concern
Unknown Or Other 2026-07-06 · PIT5855K · Service Bulletin/Repair Instructions
this preliminary information communicates that a vehicle may be encountered with the heated/ventilated seats inoperative. upon further inspection it will be found that the f19da fuse will be open. the technician is instructed to inspect the wiring harness that goes to the passenger seat back blower
Unknown Or Other 2026-06-23 · PIT5966F · Service Bulletin/Repair Instructions
this preliminary information communicates an issue with an ota pending message still displayed after an ota event and how to reset/clear the message.
Showing the 6 most recent of 815 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-20 · Engine“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 6…”
2026-10-13 · Steering“ 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 co…”
2026-10-11 · Steering“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. essential…”
2026-07-01 · Fuel/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.…”
2026-03-12 · Back Over Prevention · 33,000 mi“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 deal…”
2026-02-09 · Power Train“cadillac xt6 – vin: [xxx] echanical failures, ignored transmission recall(s), and dealer negligence i write this letter to formally place general motors company on notice of a pattern of serious mechanical failures, ignored safety recalls, and dealership indifference involving my cadillac xt6, referenced above. this vehicle has been presented to…”
2026-01-06 · Engine And Engine Cooling:exhaust System · 37,000 mi“the contact owns a 2021 cadillac xt6. the contact stated that while sitting inside the vehicle, the vehicle felt unbalanced. upon inspection, the contact noticed that the h-pipe was leaning more to the right side. the h-pipe was not centered as intended. the vehicle was not taken to the dealer or an independent mechanic. the vehicle was not repaire…”
2026-01-05 · Electrical System“the vehicle was previously recalled for an intermittent backup camera failure. prior to me purchasing the vehicle, the recall was completed and documented as repaired. i went in to the myrtle beach cadillac dealership for reoccurring issues with the camera failing exactly as disclosed in the recall. it will randomly cut to a black screen with a cam…”
2025-12-31 · Unknown Or Other“[xxx] my 2021 xt6 occasionally stumbles when accelerating from a stop, both when the engine is running or when it has auto stopped, only occasionally. if the car won't accelerate properly, it can cause a collision, especially if making a left hand turn at an intersection. it started happening about june 2025 and kept reoccurring more frequently as …”
2025-07-19 · Forward Collision Avoidance: Warnings“recall for cable for vision system repaired 5/28/2025. on 6/29/25 same issues occured. took to dealer 7/18/25. dealer confirmed cable replaced. attempted to reprogram video processing center several times ( i was at dealer 7 hours). dealer indicated that the video processing control module is not accepting re-programming. indcated that part m…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.