2015 GMC Yukon Denali

Typical pattern

2.2% of complaints about the 2015 GMC Yukon Denali came in the first year, which is unremarkable for a 2015 vehicle — around the middle of the 195 model-years on record. The median complaint arrives at 3.9 yr in service. The most-reported system is exterior lighting (40 complaints), typically at 4.3 yr or about 60,000 miles.

Complaints: 90
Median age at failure: 3.9 yr
Median mileage: 60,000 n=73
Crash / fire / tow: 4.4% of reports
Safety recalls: 0

In owners’ own words

Exterior lighting mileage not reported 2.3 yr in service

HEADLIGHTS DO NOT ILLUMINATE THE ROAD FAR ENOUGH TO ALLOW SAFE DRIVING. TOOK VEHICLE TO LOCAL DEALER AND THEY CHECKED THE LIGHTS AND SAID THEY MEET MANUFACTURES SPECIFICATION. WHEN DRIVING ON COUNTRY ROAD WITH NO OTHER ILLUMINATION THE HEADLIGHTS DO NOT PROJECT FAR ENOUGH TO SEE WHAT IS AHEAD. DRIVING AT POSTED SPEEDS 55 TO 60 MPH CANNOT SEE WHAT IS COMING UP. HAVE TO USE HIGH BEAM IN ORDER TO SEE FAR ENOUGH TO BE SAFE. DID AN ONLINE SEARCH AND FOUND THAT THIS IS A COMMON COMPLAINT FOR THIS MODEL YEAR. *TR

Exterior lighting 42,000 mi 3.4 yr in service

REAR LED (BREAK LIGHT) DOES NOT WORK TURN SIGNAL, BACKUP WORKS. COST IS OVER $500 TO REPLACE THIS IS OUTRAGEOUS EXTENDED WARRANTY DOES NOT COVER LIGHT BULBS NOW I KNOW WHY THIS SHOULD BE A FACTORY DEFECT.

Exterior lighting 83,081 mi 2.7 yr in service

TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. THE CONTACT STATED THAT THE BRAKE AND TAIL LIGHTS FAILED TO ILLUMINATE SPORADICALLY. THE VEHICLE WAS TAKEN TO WELD COUNTY GARAGE BUICK GMC (2699 47TH AVE, GREELEY, CO 80634, (970) 352-1313) WHERE IT WAS DIAGNOSED THAT THE BRAKE LIGHTS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 83,081.

Other Yukon Denali model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.

2015 GMC Yukon Denali

When each system is reported — middle 50% of complaints

In owners’ own words

Other Yukon Denali model years

How to read this