2021 Gmc Acadia problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (23) · Service Brakes (16) · Engine (15)
🧭 Reliability snapshot
Compared against other Gmc Acadia model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
28 NHTSA complaints that reported an odometer reading.
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 (847)
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 2026-06-23 · 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.
Unknown Or Other 2026-05-11 · PIC6423A · Service Bulletin/Repair Instructions
pi created to provide gm dealers with information on gathering information for projection issue
Showing the 6 most recent of 847 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-29 · Electrical System“vehicle stalled several times. check engine light and many code came up. crack sensors replaced. veh still stalls. dealer and independent dealer believes it might be cpu. all wires from cpu checked with no issue found. when veh stalls if you manipulate the wire veh will start and run with demished power and demished steering control. rpm go to…”
2026-10-25 · Steering“car was running great and mins later i get an error stating steering assist is reduced -drive with care. vehicles temperature gauge is stuck at cold and fans turn on after turning off the vehicle. i had the vehicle serviced at dave white on alexis rd in sylvania almost exactly a year ago for the same reason. was told by the service manager the issu…”
2026-10-16 · Chest Clip, Buckle, Harness“the magnetic chest clip does not latch. it can easily be pulled apart by hand. it compromises my child’s safety tremendously by allowing the harness straps to slip off of her shoulders in event of a crash leading to a projected infant. upon doing further research and posting in my moms group on facebook i’ve found countless reports dating back t…”
2026-10-16 · Forward Collision Avoidance · 64,000 mi · 💥 crash“the contact owns a 2021 gmc acadia. the contact stated that while driving at 30 mph, traffic stopped abruptly, and the brake pedal was depressed to the floorboard; however, the vehicle continued to accelerate while the forward collision avoidance warning feature activated with a red warning light on the instrument panel. the contact attempted to st…”
2026-10-15 · Unknown Or Other“exhaust flex pipe is cracked. causes fumes of gas to be released through the crack. inspected by gmc repair shop vibrating noise started, then a few days later the smell of gas, and now yes the engine light is on. this has been on going for about 3 weeks. …”
2026-10-13 · Steering“my 2021 gmc acadia steering wheel dangerously stiffened while i was turning off the road into a busy shopping parking lot making it difficult to continue my turn. having to put on my brakes sharply as to not collide with the out going traffic. there was no warning prior to the incident and had to make a quick safety judgement call and hoped the ste…”
2026-10-05 · Fuel/Propulsion System“my 2021 gmc acadia that has 63,768 miles on it was idling wednesday 9/30 when it died and would not start back we had to have it towed to a shop to get it checked out and it was throwing the p023f code for the fuel pump control module that has a recall bulletin for the same thing make model problem and under their 80,000 miles but recall not on my …”
2026-09-14 · Fuel/Propulsion System“while driving home from work the car displayed a "no fuel" warning, despite having a full tank of gas. within seconds of the display showing the car stalled out and stopped right in the middle of the road. it would not go into neutral and i had to be towed from the middle of the road to a mechanic close by. upon reading forums online it looks like …”
2026-09-10 · Air Bags · 💥 crash“on 9/08/2026 i was driving and almost got a wreck but i was able to get out and was going less the 25 and lost control of the vehicle and barely hit the curb and the two air bags went off and i was sent to the hospital …”
2026-08-25 · Service Brakes“while driving the brake vacuum pump exploded leading to catastrophic brake failure. my husband was driving and was able to stand on the brakes to get the car to stop, but had i been driving, i am not strong enough to have stopped the car. i have 3 children with my youngest being 1. if this had happened with me and my kids, we could have had a major…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.