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What 19 owners told NHTSA about the 2026 GMC Yukon Denali Xl 1500

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (19)Crash / fire / injury (1)Engine (11)Transmission & drivetrain (7)Electrical system (2)Backup camera & sensors (1)Body & structure (1)Fuel system (1)Seats (1)Visibility & wipers (1)Wheels (1)

1 of 19 complaints match · Seats · clear filters

May 18, 2026Seats

My 2026 GMC Yukon AT4 (VIN [XXX] ) has a manufacturing defect in the second-row driver-side captain's chair. The C-clamp / latch mechanism that secures the seat to the floor was depressed (partially released position) at delivery on [XXX]. I was able to manipulate the latch enough to work but the release trigger then would not depress to release the seat back from a tumble position. My [XXX] daughter's car seat usually sits in this seat. This is safety-critical for two reasons. First, the second-row captain's chair is the anchored platform for my child's car seat. A seat not fully and correctly latched to the floor compromises the LATCH and tether load path that every car-seat manufacturer's certified installation depends on. Second, a captain's chair that will not fold or tumble blocks emergency egress for third-row occupants in a crash, fire, or rollover, and blocks rescue access to a trapped child in the second row. This appears to implicate FMVSS 207 (Seating Systems) and FMVSS 225 (Child Restraint Anchorage Systems). The vehicle is approximately 16 weeks old and was sold to me with this defect present from delivery. This is one of two manufacturing safety defects on this vehicle within thirty days; the other is a spontaneously shattered panoramic moonroof (NHTSA #11738557) on [XXX] in Mississippi, filed separately. Both defects involve the same area — directly above and at the seating position where my [XXX] daughter rides daily. The vehicle is at the dealer awaiting parts (moonroof on back order to ~June 1, 2026; over six weeks out of service). I urge NHTSA to track this complaint and similar reports on the 2025-2026 full-size SUV platform for consideration of a defect investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11738572

Working with the data? Download all 19 complaints as CSV · fetched from NHTSA July 25, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2026 GMC Yukon Denali Xl 1500 verdict →