GMC Complaints

Hello, I purchased my 2024 GMC 3500 AT4 Seirra late October 2023. Since the purchase date, I have been informed by motorist while at intersections my tailgate was down. I thought I was doing something wrong. On 3/3/2024 I was preparing to wash my truck and noticed my front amber lights were on surrounding my headlights. the vehicle was off, and my keys were in the house. Then my tailgate opener activated on at least 10 - 12 times. The tonneau cover is tight so the tailgate can need assistance opening. Nevertheless, the tailgate has opened on a number of occasions and my two front amber lights came on at least once. I reported this to my dealership on [XXX]. they said my truck has not been recalled yet but to watch this and if it progresses to call them. I noticed a small dent in the top rail of the tailgate on [XXX]. I have yet to put anything in the bed of the truck or even install a hitch in the receiver. I believe the tailgate had to be bumped when it was down by another vehicle, and this is absolutely related to the tailgate malfunction. since I haven't used the bed of the truck. Moreover, I feel GMC should be held responsible for the repair or replacement of my tailgate. Regards, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

4 years ago I would get a shift to park error. This meant my vehicle did not recognize that it was in park. This meant that my vehicle would not lock, turn off the radio or headlights. My husband tried to fix it, but it turned out to be a part that only a dealership could obtain. So $500 later my vehicle was fixed. This was a KNOWN problem affecting multiple vehicles/years. Fast forward to the third week of February this year. I again am getting this same error. Took it to the dealership and there is a switch along with a transmission control harness and jumper harness that needed replaced. These parts have to do with the original shifter that was replaced 4 years ago, but of course not covered. So now $668 dollars later my vehicle is fixed. This is another KNOWN issue and my repair paper says “replace per bulletin #19-NA-206. Now I am pissed. I want to know why these are not a recall. Both times were a HUGE SAFETY ISSUE. I could not lock my car for Pete’s sake. If my car was stolen, what is the first question my insurance company is asking? It would be “ WAS IT LOCKED?” Not to mention MY PERSONAL SAFETY. Anyone could get into my vehicle and wait for me or me and my grandchildren to get in the car. Does human trafficking ring any bells???? What is it that needs to be done to make this a damn recall?

I bought a used 2018 GMC Acadia in Oct. 2023. Initially the thermostat would go out and a check engine light would come on. This seems to be a common problem in GMC Acadia's and there are multiple blogs on this online (e.g. [XXX] ). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While driving down a road in the moring hours, lost complete power and Truck shutdown. Thank God, I was able to pull off the road,since it was a Sunday Moring. Truck was not able to restart. If this had happened on a busy interstate. My wife and I could have been hurt or killed. Had the truck towed to dealer. Replaced the Transfer Case Module. Still don't know if what they put in truck was correct since mine was different than what was shown on computer specifications.

There is a big time shudder and the dealer will not believe me because it doesn’t do it for them. They did admit there is a problem but won’t fix it. I did the transmission fluid exchange like they said and still the problem. I see service bulletins for it but no recall. It’s is now out of warranty and I will have to pay for it. This is not right

This is the 2nd GMC Yukon with a faulty drivetrain I've acquired in 3 years. Both occasions were directly after the vehicle had professional service done related to the faulty system. The transmissions was fully serviced at reputable repair shops and within a month or 2, without warning, the transmissions started having mechanical issues without DTC being triggered. As well as a 2004 Buick Rendezvous with less than 70k miles on it. The 2001 GMC Yukon suddenly lost reverse and park while driving and imploded the transmission in the process. The 2004 Buick Rendezvous started slipping and ceased to move by it's own power when at operating temperature. The 2006 GMC Yukon Denali stopped shifting gears while on the freeway at 55 mph and systematically lost all moving gears within a day also while at operating temperature.

I walked from my garage to the back of my truck to the driver door a drove away. At my destination the tailgate was open and my chainsaw was sitting there. Absolutely no way I could walk past my tailgate and not see the Stihl chainsaw looking at me and drive off without closing it first. I’ve owned the truck 1 week at this point.

Seatbelt buckles are defective. Unable to latch properly in first 2 rows. In 3 led row seatbelt is also defective. Somehow my daughter got tangled in seatbelt and could not breathe, I was forced to cut seatbelt with scissors. Always had seatbelt problems since purchase. However due to the trauma my daughter faced I am very concerned.

I purchased my truck (15 GMC Sierra z71 4x4) with around 122,000 miles on it. I would be owner #2. Truck ran great. Around 150,000 miles I noticed my truck's transmission start to jerk while accelerating from gear to gear. No engine light ever appeared. Problem stopped. A few days later while dropping my daughter off at school, my truck wouldn't go passed 35 mph. I had to put the shifter in manual and shift to third gear. Other gears would just rev the rpm's to 4 or 5. Since I didn't want to put my family, me and others on the road at risk. I parked my truck and started driving my other vehicle. A few months went by, and my other vehicle had a flat tire, I had to drive my truck to work. On the way home from work, my truck started acting up again, jerking while accelerating. speedometer would go up however truck didn't move. I had to pull over quickly so I wouldn't be broken down in the traffic lane. I turned the ignition off and waited five minutes and started the truck up. I was able to make it home. At this time the engine soon light came on. I ran my scanner on my truck and code P0700 TCM was the only code showing. I had a Gmc dealer look at my truck and stated I would need a new transmission. I have done many months if not almost close to a year of research with results showing that transmission problems just what I was experiencing are a common problem with 2014-2019 chevy and Gmc / Silverado pickups with transmission 6L80. I dropped my truck off at another transmission shop just yesterday 3/3/24 and the results today were I need a new transmission. Torque converter issues. The shop stated that they repair / rebuild almost three chevy / gmc trucks like my truck a week with the same transmission problem. I still owe on my truck and shouldn't have to pay almost 6K for a transmission that is known to be an issue from the start of factory build. I own many older model gm / chevy vehicles and only had one other issue with one which also had a known recall issue.

The blind spot monitoring system comes on and off (false positives) while driving at night with no cars behind or next to me. It is a serious distraction requiring the driver to take there eyes of the road. I took the truck to a GMC dealer and they said they could not replicate the issue. I no longer drive the vehicle at night.