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.

- Espanola, NM, USA

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.

- Woodbridge, VA, USA

The rear tail light is not working properly. Around December 17, 2018 I was driving my vehicle on the city street and highway when several people advise me my light was out and not working. I check it once arrived at home and it was working properly and didn't problem. And a week later same issue from people pulling me over to advise me my tail light was out. Around January 10, 2019, I went in to hutchinson auto mall GMC dealer and they advise me everything is working properly and doesn't see a problem, and advise me to bring back should I experience the outage again. I inspect vehicle as well and seem no problem. 23 January 19 same problem and went back to dealer and they discover the outage and advise me the led tail light strip was out and need to replace the assembly. It appears their seem to be a wiring issue where the light is and out. To keep from a serious problem or fire. Request immediately investigation. The technician also advise me this seems to be a common problem.

- Port Arthur, TX, USA

Both the driver and passenger brake lights are not functioning at all. Because it is an led lamp, the entire tail lamps assembly requires replacement at a significant cost.

- Peralta, NM, USA

Water leak due to bad front windshield seal, water leak through gps antenna, four wheel drive module was bad, dvd player stopped working, and lastly a horrible vibration that occurred around 77-83 mph. To the point the vehicle did not feel safe to handle. Trim on the B post kept coming loose. This all occurred in over a years period of time. This was my second vehicle because I traded in my 2015 Tahoe because it was having many of the same issues and more. GM did repair all issues other than the shaking, they wanted me to buy tires and after reading other complaints on the shaking I refused, the tires only had 25,800ish miles on them

- Monroe, NC, USA

Wife driving children home at night. Used dash light dimmer wheel to adjust dash brightness. Caused all lights, including headlights to turn off

- Nuevo, CA, USA

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.

- Birmingham, AL, USA