2016 GMC Yukon Electrical System

This is a very common problem with GM vehicles produced from 2015 to 2019 and is occurring in 5.3L and 6.2L gas engines. The engine coolant temperature sensor is failing and defaulting to a fail safe that turns the electric cooling fans on to full speed because it thinks the vehicle is overheating. When this sensor fails, the engine temperature gauge will not work. When the vehicle is turned off the fans will stay on for 15 minutes at full speed and will deplete the battery. The sensors are being replaced multiple times with different manufacturers and the problem returns in a matter of days or weeks. You can disconnect the battery negative post and reconnect and the problem corrects until it is tripped again at later date. GM has no solution for this. This issue will leave a driver stranded and will cause engine or transmission issues if driven while the vehicle is doing this. There is no check engine light or code tripped while this occurs either.

On our 2016 GMC Yukon Denali we have experienced intermittently working brake lights on our vehicle. We were first informed by a family friend following us that our passenger side was going in and out and now our driver's side brake light is completely out. The turn signal and reverse light still works but no brake light of any indication. No warnings or messages were given it just went completely out. I believe this is a safety hazard to myself and other driver's. It is also against the law to have a break light out. I've read that there was a recall but it was dismissed in 2021 due to faulty break lights. I also read that it was only fixed at no cost for drivers at 72,000 miles and the vehicle couldn't be older than six years.We purchased our vehicle at 73××× . Not everyone can afford the $1600.00 upfront to fix a problem like this. Please reconsider making this a recall as I have been doing my research alot of Gmc Yukon drivers have experienced this. I want my family to be safe.

Rear Left tail light doesn't turn on. Was stopped by police and given a verbal warning of my tail light turning off and on while driving. Now its completely dead.

The Trailer Brake System has become inoperative on my 2016 GMC Yukon. . A random, constant and repetitive Service "Trailer Brake System" warning makes constant, persistent, repetitive and abrupt dashboard visual illuminations and abrupt audio disruptions while driving. This causes constant driver distractions and the inability to hear traffic and other warnings when the chiming audio warnings go off over and over. Additionally, the Trailer brake system is not functioning and other potential issues may exist. I have learned that NHTSA and GM are aware of this specific Trailer Brake System issue but have not provided a remedy for this known Manufacturers defect with the wiring harness. These disruptions prevent our family while driving from hearing other vehicle warnings (turn signal, rear collision, lane departure, lane assist, forward collision) and I am unable to make phone calls as well during these constant disruptions and also the inability to read the digital read out of my speed during these constant disruptions.

THE PASSENGER SIDE BLIND SPOT MONITORING SENSOR NOT WORKING BECAUSE THE SENSOR CAME DETACHED FROM REAR BUMPER FOR NO APPARENT REASON AND NOW IS JUST DANGLING. NEEDS TO BE WELDED BACK ON THE BUMPER.

2016 YUKON DENALI, BOTH BRAKE LIGHTS MALFUNCTION WITH ON 78K MILES. I CAN'T AFFORD NEW BRAKE LIGHTS AS THEY ARE MANUFACTURER ONLY AND $800 A POP. I PURCHASED THE EXTENDED WARRANTY TO COVER ANY OF THESE EXPENSES AT ANOTHER 3K, AND THE DEALER TELLS ME HEADLIGHTS, TAIL-LIGHTS ARE NOT COVERED. I SHOULD HAVE RESEARCHED BETTER, OR WOULD NOT HAVE BOUGHT A VEHICLE WITH ANY LED LIGHTS. *TR

AFTER REFUELING MY YUKON, PULLING OUT INTO TRAFFIC, THE YUKON'S RPM GAGE STARTED JUMPING UP AND UPON ACCELERATING, THE YUKON WOULD NOT MOVE. I WAS ABLE TO PUT THE YUKON IN 'M' GEAR AND SLOWLY DRIVE ANOTHER MILE BEFORE I WAS UNABLE TO DRIVE THE YUKON AT ALL. VEHICLE HAD TO BE TOWED. *TR

PASSENGER SIDE BRAKE LIGHT DOES NOT WORK. THIS IS A KNOWN ISSUE WITH GM. THERE IS POOR MANUFACTURING WHICH HAS CAUSED THIS CHRONIC FAILURE. CAN NOT REPLACE THE BULB, YOU MUST REPLACE THE ENTIRE LIGHT ASSEMBLY.

TL* THE CONTACT OWNS A 2016 GMC YUKON. THE CONTACT NOTICED WATER COMING FROM THE HIGH FREQUENCY ANTENNA, WHICH CAUSED A SHORTAGE TO THE GPS AND RENDERED IT INOPERABLE. THE VEHICLE WAS TAKEN TO SERRA CHEVROLET BUICK GMC OF NASHVILLE (2340 GALATIANS PIKE N, MADISON, TN 37115, (615) 543-5456) WHERE IT WAS DIAGNOSED THAT THE HIGH FREQUENCY ANTENNA NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED CASE NUMBER: 9-5724166813. THE FAILURE MILEAGE WAS APPROXIMATELY 60,000. THE VIN WAS NOT AVAILABLE.

PASSENGER TAIL LIGHT/BREAKLIGHT WORKS INTERMITTANTLY OR NOT AT ALL.

GPS/SATELLITE ANTENNA FAULTY DUE TO WATER INTRUSION

LED TAILLIGHT ON 2016 YUKON DENALI IS NOT WORKING. THIS IS THE SECOND TIME THIS HAS HAPPENED. THIS IS A COMMON ISSUE AND GM WILL NOT COVER A KNOWN ISSUE.

STARTED THE VEHICLE AFTER IT HAD BEEN SITTING FOR ABOUT 1 HOUR AND THE GAUGES DID THEIR REGULAR CHECK SWEEP FROM LEFT-TO-RIGHT, THEN THE FOLLOWING WARNINGS APPEARED ON THE DRIVER INFORMATION DISPLAY SCREEN: 1) SERVICE AIR BAG; 2) SERVICE TRAILER BRAKE, AND; 3) SERVICE FRONT CAMERA. AFTERWARDS, THERE WERE NO GAUGES EXCEPT THE VOLTMETER (TACHOMETER, FUEL, TEMPERATURE, OIL PRESSURE AND SPEEDOMETER WERE ALL AT RESTING POSITIONS). THE DRIVER INFORMATION SCREEN WOULD NOT SHOW THE GEAR SELECTOR, THE MILEAGE OR THE SPEED AND THE WARNING LIGHTS FOR THE AIRBAG, EMERGENCY BRAKE, TRACTION CONTROL AND TPMS STAYED ON. I DROVE THE VEHICLE A SHORT DISTANCE AND SHUT IT OFF, RESTARTED, AND IT DID NOT MAKE ANY DIFFERENCE. THERE WAS NO OPTION TO TAKE THE VEHICLE TO A DEALERSHIP FOR SERVICE IMMEDIATELY, BECAUSE WE HAD A TRAIN TO CATCH, SO WE HAD TO DRIVE IT ABOUT 20 MILES WITH NO SPEEDOMETER, BUT WE CALLED OUR GMC DEALER AND MADE A SERVICE APPOINTMENT FOR APRIL 22, 2019 ONCE WE PARKED AT THE TRAIN STATION. THE VEHICLE WAS PARKED UNTIL APRIL 21, 2019, AND, WHEN STARTED AT THAT TIME, THE INSTRUMENT PANEL AND DRIVER INFORMATION SCREEN WORKED CORRECTLY. ON APRIL 22, 2019, OUR GMC DEALER (WOODBRIDGE BUICK-GMC) PERFORMED A DIAGNOSTICS AND DISCOVERED A B3980 (NO ENVIRONMENT IDENTIFIER RECEIVED) IN THE HISTORY. ACCORDING TO THE SERVICE ADVISER I SPOKE TO, THIS CODE WILL INVOLVE THE RELAYS FOR THE TRAILER BRAKING AND THE INSTRUMENT PANEL. ALSO; THEY TOLD ME THAT THE BATTERY CABLE WAS LOOSE, SO THEY TIGHTENED THAT AS WELL. OUR EXTENDED WARRANTY DID NOT COVER THIS AND WE HAD TO PAY FOR THE DIAGNOSTICS DUE TO OUR MANUFACTURE WARRANTY EXPIRING 2 MONTHS BEFOREHAND. AS OF NOW, THIS PROBLEM HAS NOT HAPPENED AGAIN, BUT IT IS WORTH REPORTING DUE TO POSSIBLY BEING A SAFETY ISSUE.

LEFT TAILLIGHT WENT OUT AND I WAS UNDER THE WARRANTY AND THE DEALER REPLACED IT BUT HAD THE RIGHT TAILLIGHT GO OUT AT 40,000 MILES. I HAVE REFERRED 4 FRIENDS THAT PURCHASED THE SAME VEHICLE AS US AND HAVE HAD THE SAME ISSUES. THIS IS A COMMON PROBLEM WITH GMC AND THEY NEED TO RECALL THIS.

SAID VEHICLE MAINTAINS A DEFECT THAT SUBSTANTIALLY IMPAIRS ITS USE AND SAFETY AND DOES NOT CONFORM TO APPLICABLE WARRANTY PROVISIONS. THE VEHICLE'S INFOTAINMENT/INTELLILINK SYSTEM BECAME COMPLETELY DYSFUNCTIONAL ON JANUARY 14, 2017, AND SAID CONDITION WAS REPORTED TO GMC'S INFOTAINMENT CUSTOMER SUPPORT VIA TELEPHONE ON THIS DATE (SERVICE REQUEST NUMBER: 8-2666432517). AS GMC'S INFOTAINMENT CUSTOMER SUPPORT REPRESENTATIVE WAS NOT ABLE TO ASSIST WITH THE ISSUE, A SERVICE APPOINTMENT WAS SCHEDULED FOR JANUARY 17, 2017 AT AN AUTHORIZED GMC SERVICE CENTER FOR REPAIR OF THE INTELLILINK SYSTEM ON JANUARY 17, 2017. THE INTELLILINK SYSTEM WAS NOT REPAIRED OR RENDERED FUNCTIONAL BY GMC AND/OR ITS AUTHORIZED DEALER/SERVICE CENTER ON JANUARY 17, 2017. GMC PERSONNEL HAVE STATED THAT THE NECESSARY PART TO REPAIR THE DISABLED INTELLILINK SYSTEM IS ON BACK ORDER AND COULD TAKE UP TO TEN WEEKS TO BE DELIVERED TO THE DEALERSHIP. THE DISABLED INTELLILINK SYSTEM AND THE NON-USABILITY OF ITS INTEGRATED SAFETY FEATURES RENDER THE VEHICLE UNSAFE FOR USE.