2017 GMC Yukon XL electrical problems

Filed Jul 3, 2026 · Electrical, Lights · CA

The daylight running light in the rear do not work, which is needed for night time driving. At night when parked or driving the rear is completely dark, except the license plate lights. When I press the brakes they turn on, the signal lights work even the reverse lights. I've switched them to manual mode still no luck. I've checked some fuses, they all check out, nothing blowen. From some research it's all conctrolled by the body control module. There are alot of cars with this same issue there should be a recall for gm to fix properly, dues to safety of the driver and public. We just bought this vehicle which, and didnt test drive at night. 3 days later we discovered it. We even bought new lights due to the number of complaints. They still don't work.

Filed Nov 30, 2025 · Electrical, Engine · SC

At stop light vehicle began to sputter, run rough, and make noise. I was less than a mile from my home, no check engine light on. I turned the vehicle off, used a scanner to have codes P0106 and P0506 show. I had vehicle towed to Complete Car Care. Misfire on multiple cylinders, 3 push rods bent, one valve spring broken. The right Cylinder head assembly had to be removed and replaced with 8 new push rods, 8 new lifters, gaskets, seals, and valve spring. Total cost $3304.79, the vehicle only has 69,801 miles on it. In addition one of the rear tail lights has a known issue (found out on google), intermittently goes out, was never notified. I took the car to Jim Hudson GMC to be told it would cost $475 plus tax because I did not come in early enough even though it is to be warranted up to 70,000 miles. I am greatly concerned that this engine has the same manufacturing defects of the current recall and extended recall for the GMC Yukon Denali engines.

Filed Nov 30, 2025 · Electrical, Engine · SC

At stop light vehicle began to sputter and make noise, I was very close to my home, no engine light on. Upon turning vehicle off and using a code reader codes P0106 and P0506 was on scanner. I had vehicle towed to Complete Car Care. Mis fire on multiple cylinders. Vehicle has 69,801 miles. 3 push rods bent and I valve spring broken. The right Cylinder head assembly had to be removed and replaced with 8 new push rods, 8 new lifters, gaskets, seals, and valve spring. Cost was $3304.79. In addition the rear tail light has been sporadic on and off, GM was to replace up to 70,000 miles. When I took it to them they stated the time limit had expired, yet I had not been informed until I did a google search. GM requesting $475 plus tax. I am concerned my vehicle has the same manufacturing defects as the GM motors being recalled with total engine failures.

Filed Jul 25, 2025 · Electrical · 335,142 miles · VA

Odometer Fraud. The contact purchased a 2017 GMC Yukon XL. The contact stated that upon taking the vehicle to an independent mechanic for repair, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 203,000 and at the time of the vehicle servicing, it was discovered that the mileage was 335,142 in the diagnostic report.

Filed Apr 7, 2025 · Electrical, Seat belts · CA

I report years ago the seat belts wasn’t work, also all time I report with GMC vibrations and stops power at roads or low power to go in the freeways some times are to , and screen for gos and radio wasn’t work, this was a bad car . I take some videos but the agency try to charge me to check the car. Al of those put my person or others person in a risk because I lost the power in the middle of the road also, 2 of the seats belts are not working 1 of those is for my child, and the screen for gps can make me crazy at roads the system report construction or objects at road and I decrease the velocity in roads and the car was behind me slow or the screen jump from gps to radio or news or whatever some times the touch doesn’t work and I was lost in the roads driving around. The last thing is the vibration went I use the brakes to stop the car is shaking this was my first new car and is bad car and unsafe car

Filed Jun 10, 2024 · Electrical, Engine · TX

drivers side tail light flickering and sometimes not working a $900+ cost! I issue with right hand side when suv has 32k miles, seems like this is an ongoing issue, luckily it was still under warranty the 1st time. The AC condenser when out in April, also an know issue with the Yukon, they wanted to charge me $1500 to repair, I was able to find someone to do it for around $600, now the outlet and usb ports seem to not work. I also had an issue with the braking system , dealer couldn't figure it out, I finally found someone to repair it, $500 fix. For what I paid for the Yukon, you would think they would use top of the line parts!

Filed Aug 12, 2023 · Brakes, Electrical · WA

Passenger brake light assembly issues

Filed Jul 15, 2023 · Electrical, Engine · CA

Driving towards the bank and suddenly the truck turned off … no warning nothing it turned off while operating .

Filed Sep 18, 2022 · Driver assistance, Electrical · PA

UNKNOWN 4 times in the past 6 months, while parking the vehicle (turning into a spot, left or right) or slowly turning to pull up to a security code box, the car completely begins to lose power in drive, and has lost power while in drive twice. The dash begins to flicker to the point that you can't decipher which error codes are showing up. Most recently, the Trailer Brake Service message was on before it died. We were not towing anything, did not have tow mode on, or anything like that. The parking sensors were on for all these instances...regardless if we were parking or not. I can't confirm if that is the issue or not. It was pretty dangerous when I was pulling into my parents driveway along a busy road when the car did this before I was completely off the road...with my 3 young children in the back 2 rows. I know the battery is new. I did have the dealer look at the brakes about a month ago, because I felt they were soft. They said they were fine. They and myself checked the reservoir for brake fluid low. Was in normal range. Starter was replaced in March time frame. I feel this is related to the factory trailering system wiring harness or something.

Filed Jun 22, 2022 · Driver assistance, Electrical · CA

I was driving and all my sensors came on stating they needed service including front camera, blind spot notification, lane departure, emergency braking etc. upon parking I exited my vehicle and walked around the rear of my car to find multiple wires hanging down burned from my exhaust. I took my vehicle to an automotive repair shop and not the dealer since it was no longer under warranty. They said they had never seen anything like it. It appeared the harness that holds the sensor module/wires disconnected from the car. It appears to be held in place with some sort of industrial glue. When it failed it was hanging in front of the exhaust and melted all of them. This disabled all of these sensors. I now have to pay for a new harness and to replace all of these sensors. In researching online it appears water intrusion has caused issues in some models and caused these harnesses to fail. I’m wondering if this is the cause even though this model isn’t part of the recall.