What 147 owners told NHTSA about the 2017 GMC Yukon Denali Xl 1500

LED Taillight failure REAR DRIVERS SIDE. This seems to be a common occurance amongst GMC Yukon Denali XL, where the circuit housing for the LED board begins failure with fissure within the electrical contact points. The fissure soon erupts causing a shunt within the LED semiconductor and causing the brake lights to cease functioning.

NHTSA ODI 11436519

The contact owns a 2017 GMC Yukon Denali XL. The contact stated that while driving at an undisclosed speed, the contact was alerted by other drivers that the taillights were inoperable. The vehicle was taken to the dealer and diagnosed as a power train failure. The driver’s and passenger’s side taillights were replaced. The manufacturer was made aware of the failure and opened a case. The contact was referred to NHTSA to file a complaint. The failure mileage was approximately 131,000.

NHTSA ODI 11434195

Driving on city streets at approximately 45-50 MPH the transmission began shifting erratically and made significant squealing noises. After stopping, the transmission could not be shifted to another gear and was stuck in drive (D) for approximately 30 minutes. After evaluation from a professional auto mechanic, these transmissions were equipped with the incorrect fluid type from the factory that has since been taken off the market. The transmission needed to be replaced at ~99,000 miles.

NHTSA ODI 11431681

There is a known issue with the wiring harness that warns the driver by vibrating the driver's seat. The original wiring harness will short out causing malfunction of the safety feature. The wiring harness has been redesigned to correct the defect, yet GM has not issued a recall. The safety feature is an important factor in the operation of the vehicle and when this feature does not work property, safety is compromised.

NHTSA ODI 11427575

Brake lights are going out due to cracking in the LED strip. Slight jars to lights will make them work for a short time.

NHTSA ODI 11427062

1) LED tail-lights fail intermittently - this is a known problem GM does not proactively address unless customers complain repeatedly. Puts driver and passenger in danger. this began happening at 25K miles. 2) AC condenser fails - GM will not address as part of a broader recall despite extensive late model customer complaints. This put passengers in danger on any road trip across desert terrain. GM has been unresponsive despite numerous calls asking for resolution. This occurred at 36k miles. 3) Electrical failings - numerous electrical failings - from entertainment system (at 10k miles), starter motor and internal lighting - all failing at 36k miles. NHTSA must take a look at these manufacturing defects - they are putting customers at risk!

NHTSA ODI 11424931

led lights are malfunctioning on my 2017 Yukon xl. causing my brake lights to flicker and then go out completely. I've been pulled over and almost hit from behind due to these lights not working correctly. they have to be replaced by completely removing and replacing the entire light fixture for the high cost of 800+. they are not built to be fixed, just replaced. What's worse is that replacing them only buys you a little time before those again go out. its unsafe and puts my family at risk daily.

NHTSA ODI 11424717

The vehicle is misfiring and rough idling while driving. This vehicle has four of the eight fuel injectors misfiring while in operation. Although the dealership only diagnosed two of them I took it to another shop who diagnosed that 4 and 8 are also misfiring.

NHTSA ODI 11423909

The brake lights fail. First the left light failed, and two days later the right light failed. After researching, this is a common problem with GM and these models. The fix is not just a bulb- the whole rear light assemblies (each side) needs replacing with GM price quotes of $900 a side. We were over 1000 miles away from home.

NHTSA ODI 11423483

The contact owns a 2017 GMC Yukon XL. The contact stated while driving at various speeds, the contact noticed that the passenger rear tail light was inoperable. The contact stated no warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed with the tail light unit needing to be replaced. The vehicle was not repaired. The contact was relating the failure to an unknown recall. The manufacturer had not been informed of the failure. The failure mileage was approximately 106,632.

NHTSA ODI 11420159

Passenger side brake light goes in and out and often time stays out. I have read about numerous other people dealing with same issue as it is a manufacturing/quality issue. This is very dangerous. GMG apparently puts the same faulty brake parts back in car while under warranty then when the issue arises again when not in warranty sell customers a pricey part that actually works. Again, very unsafe and terrible business practice as well.

NHTSA ODI 11418480

ABOUT 500 MILES PAST THE ORIGINAL POWERTRAIN WARRANTY OF 60,000 MILES, THE TRANSMISSION FLUID TEMPERATURE SENSOR FAILED. I KNOW THIS BECAUSE AN ENGINE LIGHT CAME ON DISPLAYING P0700 AND P0711 AND THE GAUGE ON THE DASH IS ERRATIC. I DID RESEARCH, AND THE TRANSMISSION FOR THESE VEHICLES MODEL GEAR 2015 AND 2016 HAVE SEVERAL ISSUES INCLUDING THIS ONE AS OUTLINED IN SPECIAL COVERAGE N192291660 WHICH EXTENDS THE COVERAGE FOR THIS ISSUE TO 120,000 MILES. IF GMC HAS THE SAME ISSUE WITH THE PREVIOUS YEAR TRANSMISSIONS AND KNOWS ABOUT IT ENOUGH TO ISSUE A SPECIAL COVERAGE, THEY SHOULD DO THE SAME FOR THE 2017 MODELS.

NHTSA ODI 11412985

PASSENGER SIDE REAR LED BRAKE LIGHT HAS STOPPED WORKING. IT DOES NOT LIGHT UP.THIS IS A PROBLEM THAT HAS OCCURRED IN THE 2015 AND 2016 YUKONS. I WAS INFORMED BY A FELLOW MOTORIST THAT MY BRAKE LIGHT WAS OUT. THE REPAIR IS ESTIMATED AT $850.00 AS THE WHOLE REAR LIGHT UNIT MUST BE REPLACED.

NHTSA ODI 11406717

WHILE SITTING AT A STOP ON A 9DEGREE INCLINE BEHIND ANOTHER VEHICLE I STARTED TO ACCELERATE TO MOVE UP TO THE STOP SIGN. AS I PRESSED ON THE ACCELERATOR THE ENGINE RPM'S INCREASED BUT THE VEHICLE DIDN'T MOVE AS IF THE TRANSMISSION WAS NOT ENGAGING, THEN WITHOUT WARNING IT JERKED FORWARD. I HAD TO APPLY THE BRAKES TO KEEP FROM HITTING THE VEHICLE IN FRONT OF ME. I HAVE ALSO HAD PROBLEMS WITH THIS VEHICLE TRANSMISSION SUCH AS TRANSMISSION FLUTTER, HARSH SHIFTS IN LOWER GEARS, ETC ETC.

NHTSA ODI 11404824

BRAKE LIGHTS WORK INTERMITTENTLY. VERY DANGEROUS! PASSENGER SIDE BRAKE LIGHT, STOPPED WORKING COMPLETELY, THEN CAME BACK ON.

NHTSA ODI 11403644

INTERMITTENT FAILURE OF ONE BRAKE LIGHT WHILE MOVING. VEHICLE HAS ONLY 38000 MILES. THIS APPEARS TO BE A COMMON COMPLAINT (JUDGING BY CAR FORUMS). I UNDERSTAND GMC MAKES AN IMPROVED VERSION OF THIS ASSEMBLY. GIVEN THE POTENTIAL SAFETY ISSUE, THIS SHOULD BE A RECALL.

NHTSA ODI 11399022

CAR STRUGGLED TO START WHEN I STARTED IT. IDLE WAS/HAS BEEN REALLY SHAKY. ENGINE LIGHT CAME ON. I GOT A DIAGNOSIS FROM 2 COMPANIES FOR MY ENGINE. BOTH SAID I NEEDED TO REPLACE ALL 8 FUEL INJECTORS. GMC HAS AN EXTENDED WARRANTY TO COVER THESE ISSUES, BUT IT IS NOT AVAILABLE FOR MY STATE OF UTAH. HERE IS THE CODE FOR REFERENCE FOR YUKON #N182198000. MY CAR IS A YUKON XL 2017 THAT NEEDED FUEL INJECTORS AT 85,000 MILES! HOW IS THIS OKAY? THE REPAIR COST $1,990.28. THE POWER TRAIN WARRANTY HAS BEEN CHANGED FOR 2016 AND 2017 GMC VEHICLES SO THAT IT IS NOW 60,000 MILES OR 5 YEARS. MECHANICS HAVE REPORTED THAT GM HAS CHANGED THE WAY THEY ARE BUILDING ENGINES IN ORDER TO REDUCE COSTS, BUT IT APPEARS THAT CONSUMERS SUCH AS MYSELF ARE BEARING THE BRUNT OF THE COSTS. I WOULD APPRECIATE IF THE EXTENDED SERVICE WARRANTY COULD BE EXTENDED TO ALL STATES IN THE U.S. VS. THOSE WHO HAVE MANDATED IT BECAUSE OF LEGISLATION OR LEGAL ENFORCEMENT.

NHTSA ODI 11398055

PASSENGER BRAKE LIGHT IS INTERMITTENT. CLEARLY ISSUE WITH THE INTERNAL ASSEMBLY.

NHTSA ODI 11397777

THE NAVIGATION AND INFOTAINMENT FAILS ON A REGULAR BASIS. CANNOT USE TOUCH SCREEN WHEN IT FAILS. FLORIDA DEALER SAID NOTHING WRONG. THE SCREEN WILL TURN TO A CLOCK WITHOUT TOUCHING IT. CANNOT USE NAVIGATION ON MANY DAYS. HAD TO LOCATE A NEW DOCTOR AND THE NAVIGATION FAILED! HAPPENS WHEN STATIONARY OR IN MOTION. THIS STARTED IN MAY 10, 2018 THROUGH TODAY, FEBRUARY 17, 2021. IT IS ONGOING DAILY.

NHTSA ODI 11396662

MY VEHICLE TRANSMISSION WENT OUT MOTOR MOUNDS WENT OUT AND SEAT STOPPED WORKING AT CONDENSOR WENT OUT. AND A FEW OTHER THINGS. SUV IS A 2017 WE HAVE ALREADY SPENT OVER 11,000 IN 2 YEARS FIXING IT NOW THE AC IS 2400 TO GET FIXED.

NHTSA ODI 11390222

MY 2017 YUKON IS EXHIBITING THE EXACT SAME BRAKE BEHAVIOR AS THE BELOW COMPLAINT, BUT MY VEHICLE IS NOT ELIGIBLE FOR THE RECALL FOR SOME REASON. NHTSA CAMPAIGN NUMBER: 20V603. GM'S OWN NUMBER FOR THIS RECALL IS N202300860.

NHTSA ODI 11376847

BRAKE PROBLEMS WHEN STARTING BRAKES LOOSE VACUUM PRESSURE STILL NO FIX AFTER RECALL. 2ND CHECK ENGINE LIGHT CAME ON AT ABOUT 36,500 MILES FUEL INJECTORS DEFECTIVE 3RD TRANSMISSION PROBLEMS VALVE BODY DEFECTIVE PAID OVER 85,000 AND THIS SUV ITS NOT WORTH IT DEFECTIVE ALL DEFECTIVES UNDER 43,000 MILES

NHTSA ODI 11362474

TL* THE CONTACT OWNS A 2017 GMC YUKON XL. THE CONTACT STATED THAT WHEN ATTEMPTING TO PARK, IN ORDER TO HAVE THE VEHICLE COME TO A COMPLETE STOP THE BRAKE PEDAL HAD TO BE DEPRESSED ALL THE WAY TO THE FLOORBOARD. THE CONTACT STATED THAT THE SAME FAILURE HAD OCCURRED TWICE AFTER THE ORIGINAL FAILURE. ON ONE OCCASION, THE SERVICE BRAKE ASSIST WARNING MESSAGE APPEARED ON HER INSTRUMENT PANEL. LAFONTAINE BUICK GMC OF ANN ARBOR (500 AUTO MALL DR, ANN ARBOR, MI 48103) WAS NOTIFIED OF THE FAILURE AND THE CONTACT WAS INFORMED THAT THERE WERE NO RECALLS. THE CONTACT THEN TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THE VEHICLE WITH A FAULTY BRAKE ASSIST THAT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT WAS MADE AWARE OF NHTSA CAMPAIGN NUMBER: 19V645000 (SERVICE BRAKES, HYDRAULIC) WHICH HE LINKED TO THE FAILURE. THE MANUFACTURER HAD YET TO BE NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 58,000.

NHTSA ODI 11351216

8 SPEED TRANSMISSION BUFFETS AT LOW RPM'S BETWEEN THE SPEED OF 40 AND 80. THE VEHICLE'S TRANSMISSION DOES NOT ENGAGE WHEN COLD. THIS HAS BEEN AN ONGOING ISSUE SINCE THE VEHICLE HAD APPROXIMATELY 25,000 MILES ON IT.

NHTSA ODI 11348612

RIGHT READ TAIL LIGHT, BRAKE LIGHT AND REVERSE LIGHT STOPPED WORKING AT 61,135 MILES ON ODOMETER READING FOR NO APPARENT REASON.

NHTSA ODI 11340728