Home · 2015 GMC Yukon Denali · Complaints

What 606 owners told NHTSA about the 2015 GMC Yukon Denali

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 (606)Crash / fire / injury (15)Lights (313)Electrical system (94)Brakes (92)Transmission & drivetrain (58)Steering (37)Engine (33)Suspension (17)Body & structure (16)Fuel system (14)Visibility & wipers (8)

14 of 606 complaints match · Fuel system · clear filters

Jul 17, 2025Fuel system

Truck loss power turning off while making a turn into driveway with incoming traffic. Happen on several occasions. Diagnostic at dealership states high pressure fuel pump is leaking fuel internal making it run rich. NHTSA states this model truck has had previous recall.

NHTSA ODI 11674347

Feb 24, 2025Fuel system

Fuel line rubs between cab and tank making a hole. Fuel pours out on when driving or running. Huge fire risk. Glad I caught it before the car burned up with us in it.

NHTSA ODI 11644484

Nov 27, 2024Fuel system

The contact owns a 2015 GMC Yukon. The contact stated while the vehicle was parked, there was an abnormal odor coming from the inside of the vehicle. No warning light was illuminated. The vehicle was taken to an independent mechanic and was diagnosed with a fuel pump leak. The contact was informed that the fuel pump needed to be replaced. The contact researched and became aware of an undisclosed recall however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 226,000.

NHTSA ODI 11627732

Sep 3, 2024Fuel system

Gas line leak

NHTSA ODI 11612274

Jul 10, 2023Fuel system

Fuel pump leak. our cabin fills up with exhaust causing myself and my 3 young kids (1,3,5) to start coughing, eyes and throat burning, headaches & a hard time breathing. confirmed by GMC dealer in concord & separate auto shop. They told us it had a recall and that they couldn't fix it after paying them to diagnose it since it was recall. Now GMC dealer is telling us that the problem and recall exists for other 2015 Yukon models but our VIN # Is not included and that's why they never fixed the problem that I've been complaining about since I bought the truck (dont remember exact purchase date but the vehicle was new and under warranty for years). I've taken it to the dealership 3 times for the same problem (exhaust smell in cabin) and they kept saying it's fine. Now it's so bad that we can't drive it because it makes us feel sick.

NHTSA ODI 11531453

Jul 28, 2022Fuel system

The contact owns a 2015 GMC Yukon Denali. The contact stated that the fuel tank was leaking fuel. The contact had not taken the vehicle to a certified mechanic or dealer to be diagnosed or repaired. The manufacturer was not made of the failure. The approximate failure mileage was 130,000.

NHTSA ODI 11476364

Nov 13, 2020Electrical systemLightsFuel system

SO MY BRAKE LIGHT ON REAR ALL HAVE GONE OUT DUE TO BAD LED LIGHTS OR SOME KNOWN COMPONENT GOES BAD. #2. FUEL PUMP IS BAD. #3 RADIATOR HAS A CRACK IN IT. THIS IS A 2015 YUKON

NHTSA ODI 11374598

Aug 2, 2020Fuel system

RAW FUEL FUMES INSIDE THE CAB AND OUTSIDE THE VEHICLE. AFTER LOOKING UNDER THE VEHICLE THERE IS A SLOW BUT STEADY FUEL LEAK FROM THE GAS TANK. I BELIEVE IT IS THE PLASTIC FUEL LINE THAT HAS WORN A HOLE IN ITSELF FROM RUBBING ON ANOTHER OBJECT.

NHTSA ODI 11342805

May 18, 2020Fuel system

WAS DRIVING DOWN THE ROAD AND SUDDENLY THE CHECK ENGINE LIGHT STARTED FLASHING AND THE ESP LIGHT CAME ON. I WAS VERY CLOSE TO HOME SO I DROVE BACK HOME AND AS I STOPPED THE CAR IT STARTED SHAKING AND I TURNED IT OFF. BROUGHT IT TO THE MECHANIC AND HE SAID THE FUEL INJECTORS NEED TO BE REPLACED. I HAVE BEEN WITHOUT MY CAR FOR 11 DAYS NOW AS THIS IS SUCH A COMMON PROBLEM THAT ALL THE PARTS ARE ON BACK ORDER. THIS IS VERY DANGEROUS AND NEEDS TO BE RECALLED ESPECIALLY AS IT IS SUCH A COMMON PROBLEM. FOR SUCH AN EXPENSIVE CAR THESE KINDS OF THINGS SHOULD NOT BE HAPPENING. HOPING FOR A RECALL SOON SO THAT I CAN RECEIVE MY MONEY BACK. *TR

NHTSA ODI 11324926

Feb 14, 2020Fuel system

UNDER NORMAL DRIVING CONDITIONS, MY CP4 FUEL INJECTION SYSTEM BLEW UP. I HAD TO HAVE IT TOWED TO THE NEAREST DIESEL REPAIR SHOP, $14.000 LATER , I WAS BACK UP AND RUNNING

NHTSA ODI 11309254

Sep 6, 2019Speed controlFuel systemFire

WHEN THE GAS PEDAL IS DEPRESSED FULLY, THE GAS PEDAL STICKS THE CAR CONTINUES ACCELERATING. THE PROBLEM BEGAN WITH INITIAL COMPLETE DEPRESSION OF GAS PEDAL TO CAUSE SOME ACCELERATION AND DEPRESSING BRAKE ALLOWED VEHICLE TO RETURN TO NORMAL DRIVING. THE PROBLEM HAS WORSENED OVER TIME TO THE POINT WHERE BOTH FEET DEPRESSING ON THE BRAKE PEDAL DID NOT AFFECT ACCELERATION AND CAUSED SMOKE TO EMIT FROM BOTH FRONT BRAKE PADS, AND THE PASSENGER FRONT BRAKE PAD FLAMED UP FROM THE HEAT. THE CAR WAS DRIVEN INTO A PARKING LOT WITH THE BRAKE DEPRESSED THE ENTIRE TIME, AND TURNED OFF. SO FAR, THIS HAS ONLY HAPPENED WHEN THE GAS PEDAL IS FULLY DEPRESSED. THE DEALER TOLD ME THE MAT CAUSED THIS EVEN THOUGH THE MAT IS CUT AROUND THE GAS PEDAL WITH PLENTY OF ROOM TO NOT OBSTRUCT PEDAL. THE MAT ALSO DOES NOT SLIDE OR MOVE ABOUT THE AREA. THE GMC DEALER TOLD ME THEY TOOK THE MAT OUT AND DID NOT NOTICE ANY AUTO ACCELERATION, AND THEY TOLD ME THEY WERE UNABLE TO DEPRESS THE GAS PEDAL FULL TO ATTEMPT TO RECREATE THE PROBLEM, TO NOT COMPROMISE THE SAFETY OF THE OTHER CARS NEARBY.

NHTSA ODI 11253584

Mar 31, 2019LightsFuel system

I HAVE 47,000 MILES ON MY YUKON SLT. I REPLACED THE HIGH PRESSURE FUEL PUMP ABOUT TWO WEEKS AGO FOR A PRICE OF $1,400. NOW MY DRIVER SIDE BRAKE LIGHT WENT OUT. DEALER IS TELLING ME NEARLY $800 TO FIX. I PAID GOOD MONEY FOR THIS CAR AND HAVE HAD NOTHING BUT PROBLEMS.

NHTSA ODI 11192802

Mar 13, 2019SuspensionFuel systemEngine

2015 GMC YUKON SLE. CONSUMER WRITES IN REGARDS TO PRESSURE BOOMING SENSATION WHILE DRIVING VEHICLE. *LD *TR

NHTSA ODI 11185191

Jul 28, 2016Fuel system

JULY 26, 2016 WE WERE IN LAS VEGAS TRAVELING ON THE STRIP AND OUR VEHICLE LOSS POWER AND DIED, IT STARTED UP AFTER A FEW MINUTES. A CODE WAS SET FOR FUEL PUMP PRESSURE, THEN TODAY WE WERE IN MARNA AZ, AND OUR VEHICLE DIED WHILE DRIVING IN TOWN. A POLICEMAN FOLLOWED US TO FIND OUT WHAT WAS WRONG AND WE TOLD HIM. TO OUR SURPRISE HE HAS BEEN HAVING THE SAME ISSUE WITH HIS 2015 TAHOE. HE BROUGHT HIS VEHICLE TO DEALERSHIP AND THEY TOLD HIM IT HERE WAS A PROBLEM WITH THE FUEL PUMP WHEN THE TEMP IS TOO HOT.

NHTSA ODI 10891483

Working with the data? Download all 606 complaints as CSV · fetched from NHTSA July 22, 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 2015 GMC Yukon Denali verdict →