2015 GMC Yukon Denali XL

No clear pattern

0% of complaints about the 2015 GMC Yukon Denali XL arrived in its first year of service. That is an unusual figure for a 2015 vehicle, but with only 94 complaints on record the sample is too small to call it a pattern — the margin of error covers the range where ordinary vehicles sit. The figures below are reported without a verdict. The most-reported system is exterior lighting (36 complaints), typically at 3.9 yr or about 61,000 miles.

Complaints: 94
Median age at failure: 3.9 yr
Median mileage: 60,000 n=82
Crash / fire / tow: 0% of reports
Safety recalls: 0

In owners’ own words

Exterior lighting 39,000 mi 2.8 yr in service

THE BRAKE LIGHTS IN THIS VEHICLE ARE FAULTY. MY DRIVER SIDE WENT OUT IN JULY AND IN THE SAME MONTH MY PASSENGER SIDE WENT OUT. THE BULBS ARE NOT BURNED OUT AND IT HAS TO DO WITH THE WIRING. GMC WILL NOT COVER THE SECOND LIGHT OR PROVIDE COST ASSISTANCE BECAUSE I AM OUT OF WARRANTY DUE TO MILES.

Exterior lighting 52,220 mi 3.3 yr in service

VEHICLE WAS MANUFACTURED MID 2014, 2015 MODEL, CURRENTLY HAS JUST OVER 52K MILES. DRIVERS SIDE TAILLIGHT IS BEING TEMPERAMENTAL; NO WARNING LIGHTS INSIDE TO INDICATE A FAILURE. WHEN YOU PRESS ON THE TAILLIGHT IT STILL ILLUMINATES, THERE ARE NO LEDS OUT, BUT TAILLIGHT AND BRAKE LIGHT WON'T ILLUMINATE. CALLED THE DEALERSHIP AND THEY'VE STATED IF FOUND FAULTY IT REQUIRES COMPLETE REPLACEMENT OF THE TAILLIGHT AND IT WAS QUOTED AT ROUGHLY $850 INSTALLED, WHICH SEEMS REALLY EXCESSIVE WHEN A TAILLIGHT GOES OUT.

Exterior lighting 87,000 mi 3.3 yr in service

LED BRAKE LIGHT ALREADY BURNT OUT AND ONLY 2 YEARS OLD. OVER $600 TO FIX A LIGHT THAT IS SUPPOSE TO HAVE A UNLIMITED LIFE....

Electrical system 50,000 mi 3.2 yr in service

WHILE IN MOTION MY VEHICLE SHUTS COMPLETELY OFF. THIS IS IN THE MIDDLE OF TRAFFIC AT TIMES. IT DISPLAYS WARNINGS THAT STABILITRACK HAS BEEN DISABLED AND SHUITS DOWN EVERYTHING ELECTRICAL. AT SOME POINTS IT DOESNT SHUT COMPLETELY DOWN, BUT INSTEAD HESITATES AND THEN PICKS BACK UP. THIS HAPPENS IN VARIOUS SITUATIONS WHETHER IT BE ON THE HIGHWAY, TURNING, OR DRIVING CITY ROADS.

Other Yukon Denali XL 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 XL

When each system is reported — middle 50% of complaints

In owners’ own words

Other Yukon Denali XL model years

How to read this