Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 14 of 18 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Exterior Lighting. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Power Train. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports1 injury reports
What owners actually said
18 reports
44,415 miles · May 24, 2019
Power Train
THE VEHICLE WILL OFTEN SHIFT UNPREDICTABLY. MOVING FROM A DEAD-STOP, THE VEHICLE WILL SOMETIMES DEMONSTRATE SIGNIFICANT HESITATION (TO SHIFT) FOLLOWED BY A LOUD AND VIOLENT ENGAGEMENT. IN SOME INSTANCES THE VEHICLE FEELS LIKE IT HAS BEEN HIT BY ANOTHER VEHICLE. THE AUTOMOBILE WILL SHUDDER AND SLIP AND JERK WHEN IT SHIFTS BETW…
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THE VEHICLE WILL OFTEN SHIFT UNPREDICTABLY. MOVING FROM A DEAD-STOP, THE VEHICLE WILL SOMETIMES DEMONSTRATE SIGNIFICANT HESITATION (TO SHIFT) FOLLOWED BY A LOUD AND VIOLENT ENGAGEMENT. IN SOME INSTANCES THE VEHICLE FEELS LIKE IT HAS BEEN HIT BY ANOTHER VEHICLE. THE AUTOMOBILE WILL SHUDDER AND SLIP AND JERK WHEN IT SHIFTS BETWEEN GEARS. THE VEHICLE IS UNSAFE TO OPERATE. THE DEALER CAN NOT FIX THE ISSUE, BUT UNDERSTANDS THE VEHICLE PROBLEMS.
NHTSA ODI #11209746
Mileage unknown · May 12, 2019
Exterior Lighting
BOTH BACK BRAKE LIGHT WORK INCONSISTANTLY. WHILE MOVING AND AT A COMPLETE STOP. LOCAL DEALERSHIP CHARGES AT MIN 1200 PER LIGHT TO FIX. SEEMS TO BE A COMMON PROBLEM WITH THE DENALI'S.
NHTSA ODI #11207084
Mileage unknown · May 6, 2019
Exterior Lighting
BOTH BREAKLIGHTS NO LONGER WORK DUE TO FAULTY ELECTRICAL PANEL.
NHTSA ODI #11205797
50,000 miles · Jan 28, 2019
Exterior Lighting
WE BOUGHT OUR 2015 DENALI 1 YEAR AGO AND HAVE APPROX 50,000 MILES AND THE PASSENGERS SIDE TAIL LIGHT IS OUT. AFTER RESEARCHING TAILLIGHT PROBLEMS FOR MY MAKE AND MODEL THIS SEEMS TO BE A VERY COMMON ISSUE. THIS SHOULD BE CONSIDERED AS A RECALL BUT WHEN LOOKED INTO, I SEE IT IS NOT. ITS A SHAME TO SPEND SO MUCH MONEY ON A VEHICL…
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WE BOUGHT OUR 2015 DENALI 1 YEAR AGO AND HAVE APPROX 50,000 MILES AND THE PASSENGERS SIDE TAIL LIGHT IS OUT. AFTER RESEARCHING TAILLIGHT PROBLEMS FOR MY MAKE AND MODEL THIS SEEMS TO BE A VERY COMMON ISSUE. THIS SHOULD BE CONSIDERED AS A RECALL BUT WHEN LOOKED INTO, I SEE IT IS NOT. ITS A SHAME TO SPEND SO MUCH MONEY ON A VEHICLE TO HAVE THE TAIL LIGHT OUT AT 3 YEARS (AFTER FACTORY WARRANTY IS ALREADY OUT) AND YOU HAVE TO REPLACE THE WHOLE TAIL LIGHT INSTEAD OF ONE PIECE.
BOTH LED BRAKE LIGHTS HAVE FAILED. IF YOU TAP THEM THEY WOK FOR A MINUTE BUT WHEN DRIVING THEY GO OUT AGAIN. THE SEAT VIBRATES TO ALERT YOU OF OBSTACLES BUT THE MOTOR IN THE SEAT ONLY WORK PERIODICALLY. THE REAR WINDOW WIPER HAS FAILED. THE YUKON HAS BEEN DRIVEN 3 YEARS AND 50K MI AND NOW NEEDS THOUSANDS OF DOLLARS IN REPA…
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BOTH LED BRAKE LIGHTS HAVE FAILED. IF YOU TAP THEM THEY WOK FOR A MINUTE BUT WHEN DRIVING THEY GO OUT AGAIN. THE SEAT VIBRATES TO ALERT YOU OF OBSTACLES BUT THE MOTOR IN THE SEAT ONLY WORK PERIODICALLY. THE REAR WINDOW WIPER HAS FAILED. THE YUKON HAS BEEN DRIVEN 3 YEARS AND 50K MI AND NOW NEEDS THOUSANDS OF DOLLARS IN REPAIRS BECAUSE OF THE DEFECTIVE PARTS USED.
NHTSA ODI #11114352
Mileage unknown · Jul 10, 2018
Exterior Lighting
RIGHT BRAKE LIGHT IS OUT
NHTSA ODI #11110636
Mileage unknown · Aug 9, 2017
Electrical SystemPower TrainSuspension
LETTER FROM SENATOR FEINSTEIN INQUIRY ON BEHALF OF CONSTITUENT IN REGARDS TO HAVING PROBLEMS WITH GMC SIERRA DENALI PICKUP 2015. *LD THE CONSUMER STATED THE VEHICLE HAS HAD MULTIPLE ISSUES WITH THE SUSPENSION, TRANSMISSION, AND ELECTRONICS. THE VEHICLE WOULD RIDE ROUGH AND THE STABILITY LIGHT WOULD ILLUMINATE. THE TRANSMISSIO…
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LETTER FROM SENATOR FEINSTEIN INQUIRY ON BEHALF OF CONSTITUENT IN REGARDS TO HAVING PROBLEMS WITH GMC SIERRA DENALI PICKUP 2015. *LD THE CONSUMER STATED THE VEHICLE HAS HAD MULTIPLE ISSUES WITH THE SUSPENSION, TRANSMISSION, AND ELECTRONICS. THE VEHICLE WOULD RIDE ROUGH AND THE STABILITY LIGHT WOULD ILLUMINATE. THE TRANSMISSION NEEDED TO BE REPLACED. THE ELECTRONIC DASH BLACKED OUT AND WOULD NOT FUNCTION, THE SETTIGNS SWITCHED ON THEIR OWN. THE VEHICLE DIED AND SHIFTED DANGEROUSLY. THE MANUFATURER WAS NOTIFIED. THE CONSUMER A FIX WAS UNAVAILABLE. UPDATED 08/09/2017*JS
NHTSA ODI #11014368
48,000 miles · Apr 15, 2017
Exterior Lighting
REAR TAILLIGHTS HAVE MOISTURE IN THEM. THE MOISTURE IS CONSTANT IN ONE AND INTERMITTENT IN THE OTHER. BOTH HAVE BEEN REPLACED ONCE BY DEALER 3 MONTHS AGO. PROBLEM STILL EXISTS
NHTSA ODI #10978631
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2015 GMC Denali Problems, Complaints & Recalls | Skip That Year
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