A/C started blowing hot air. Found out that the condenser had a leak. After doing some research I found that this has been a big problem

- Salisbury, NC, USA

Case 3:18-cv-00096 billy frank and john O'brien, on behalf of themselves and all others similarly situated. This outlines the issue in detail. Https://www.lieffcabraser.com/pdf/gm_ac_system_complaint.pdf

- Mesquite, TX, USA

I was warming the truck up in the morning with the auto start, parked, and had the auto defrost turned on for the rear. When I entered the truck and closed the door the rear passenger window that is facing the bed, shattered. I'm assuming the defrost is running too hot and weakened the glass or something related to the issue. I know of several other people that have this problem as well. Https://www.GM-trucks.com/forums/topic/209824-2017-Sierra-denali-rear-window-exploded/?page=5

- Lakewood, OH, USA

When I press on the brakes, it feels as though the master cylinder is gone and it is the manual type drum brakes that has air in the line. It takes everything I have to press them and pray it stops!! the vehicle is always in motion when detecting this problem and seems to occur more repeatedly if the brakes are pump quickly in succession before applying brakes or when the brakes are pressed for an extended amount of time then you release and repress it want stop. Another issue is my lane id warning. When turned on at the button, it just beeps at me and shows service light. When I first took it in with the problem, the dealership called me and said all fixed, but it did it before I left the parking lot. They had my truck all day for the issue, put me out of a vehicle and then said they would need for extended time to repair but didn't know there was problem. How do you make that determination when you told me its repaired. I just turned it off and haven't used in 2 years.

- Ellisville, MS, USA

All screens in vehicle shut off while driving, almost like the vehicle turned off. Then I was giving a service notification the the stabilitrak system.

- Nashville, TN, USA

This post is about making the public aware of a potential problem. Although the manufacturer did not step up and do the right thing, I'm concerned others may have dealt with this problem or it may happen in the future. On August 29, 2018, my truck was parked on my driveway by 4pm after running errands for a couple of hours. At 6pm my husband went out to get something out of it and saw it had caught on fire. Nothing was left plugged in and there was nothing flammable in the truck. The fire dept was called and upon inspection stated the fire had started in the center console and spread to the front passenger seat. The cause of the fire look to be wiring that overheated inside the console where the wiring connected to 2 usb ports. GM inspected the damage and found there was not a manufacturer defect and the cause of the fire was from an external source. Ironically, their 3rd party "expert" fire investigator was not aware there was a wiring harness located behind the usb ports and had to be shown their location. My insurance company is now investigating the incident. I'm asking them to look into the 12V power outlet possibly overheating as I know of someone who had theirs overheat in their 2018 Chevy Silverado. The day after the fire I sent photos to them and they could not believe the damage. When I told them the outcome of GM's investigation they were dumbfounded. I'm fortunate no one was hurt, but am afraid this may happen to someone else. I made a 40K + investment with GM and literally "was burned". I want other to be aware of the potential fire danger. I did expect GM to step up and take care of their loyal customer (I've bought 8 GM vehicles), but it appears the almighty dollar won out. Thankfully, in my case, no one was hurt.

- Oklahoma City, OK, USA

Roof antenna leaking after 2.5 years the roof mount antenna for xm radio started leaking into headliner causes radio to get intermittent signal. Leak travels down driver side pillar into dash board which will cause electrical shorting and failure. This problem is due to a faulty design of the antenna. There are thousands of complaints online regarding this problem. Dealer refused to replace at there expense. Contacted GM who also refused to replace it. This was a $60,000 truck less than 3yrs old. It got my attention because I use xm radio and lost reception. There must be many more with this problem who don't even know it because they don't use xm radio. This is a serious problem having a leak traveling down into dashboard what else is affected air bags, lights, brakes etc. The design of this is awful GMC is extremely negligent not recalling on this problem

- Hudson, FL, USA

A/C condenser leaking freon it's a known problem for

- Elkton, FL, USA

When turning or backing up at slow speeds steering is lost or the wheel jerks violently. There are chimes and messages displayed for stabillitrakand anti-theft warning. Message to roll the window all the way down and up will also appear vehicle electrical power is affected. The system seems to keep resetting. All power will be lost and vehicle will not start.

- Racine, WI, USA

Ac condenser had to be replace due to leak. Faulty design & installation. GM already recalled 2014 models with the same problem. Condenser line bracket mount does not allow the line to flex, thus making crack in condenser. Repaired by the dealer at a cost of $775.61.

- Toccoa, GA, USA

Vehicle had a fire starting in the dashboard area behind instrument cluster I think. It took less than 15 minutes from the smell of and issue to flames visible. I noticed the gauges becoming erratic than the check engine light came on with what felt like the 4 wheel drive kicking in and out followed by the motor running poorly. I pulled over, turned the vehicle off as the smoke started. Than dialed 911.. trooper was there in 6 minutes with fire department shortly after. I was on a highway traveling about 70 mph. There were quite a few potholes as this was winter time. Lights were on, cruise was on, heated seats and steering wheel were on, radio was on, phone and laptop were charging ( laptop utilizing 110 outlet in truck).

- Westville, NJ, USA

Ac condenser unit starts leaking and vehicle ac stops blowing cool air. This may only seem like a inconvenience, but here in the South summers are unbearable without ac. Occupants of vehicles could easily succumb to heat exhaustion. It could be difficult for the driver to keep sweat out of his or her eyes. This inconvenience could lead to distracted/disgruntled driving. There are actually a number of reason that this could pose a serious safety risk. GM is well aware of this issue and has failed to properly address the situation. I didn't notice that my ac wasn't working until my vehicle had 37,000 miles on it. I'm positive that it took longer than the few days between me being at 36,000 and 37,000 miles for the refrigerant to completely exit the system and the air to not work. GM has offered a half-hearted goodwill repair that is still just shy of $600. This has been a known issue for GM for years and is not only negligent, selling me this vehicle in November of 2015 essentially constitutes fraud.

- Tuscaloosa, AL, USA

The air condition condensor is leaking and therefore caused the ac not work. We have purchased a new condensor to replace it and fix the problem but this should be covered by the manufacturer.

- Summerville, SC, USA

At 50,000 miles, and 24 months after purchasing it new, the air conditioning stopped working due to a faulty condenser. After investigating this problem I found out that there is an extremely high failure rate of GMC trucks for the same exact problem. It is a well known defect per several GM dealers who are left to deal with the problem. A bracket to secure the A/C line was never installed when vehicle was built, causing movement in the line which eventually can ruin the condenser, ac line and compressor. I asked GM dealer to fix under warranty but was told that the best that GM was willing to do was to pay 40% of the repair bill. This is unacceptable, as the defect is widespread in many of their light trucks

- Reedley, CA, USA

Ref. Complaint # 11013360. Once again, at 14,842 miles, I was coasting after turning into a long driveway, I pushed the accelerator to continue.. the engine revved and the truck acted as if it was in neutral. This time, in the security of my driveway, I did not touch the gear shift as I had in times before. This time I just tried pushing the accelerator. After four attempts where the engine just revved.the gear finally "caught after the fourth attempt to accelerate". once again, I took it into my dealership and they could not find anything wrong, nor could they duplicate this issue. Please, I need something done! I am driving cross country from South Carolina to Wyoming in one month. I am very apprehensive about driving this truck as I feel it is unsafe and will cause me to crash. I have not heard a response from you since first reporting this problem 8/7/2017.

- Piedmont, SC, USA

March 2017, at 10,881 miles I accelerated to pass a car, lost power, like it suddenly went into neutral. I tried several gears, multiple times, before being able to finally get the manual gear to get me home.local dealership cleaned up the transmission of broken metal parts. 2,500 miles later, I tried to accelerate after turning into a long driveway, again no power. I tried several gears as before and the manual gear got me to the house.the engine was working and rpms revved, and just like before, felt like it was in neutral. Dealership went above and beyond to try to duplicate the problem. They even checked my truck for the GM recall #14192, NHTSA campaign id # 14V374000, because it was having the same issues. I think that the broken parts found the first time was an incidental finding due to the fact that the problem has happened twice. During all this there has been small electrical issues ie: Weak sounding buzzers when I open the door, internal lights either staying on or not coming on at all, and intermittent issues with remote start. My husband bought this truck brand new in March 2016, 6 weeks before he died, so this truck has a lot of sentiment, however, I am very concerned that this truck is unsafe. The fear of being T-boned in an intersection, or suddenly losing power in 70mph traffic is terrifying! I am moving from SC to Wyoming in 6 weeks and am scared to death I am going to have problems. I have reported this to the GM complaint dept. Service case # 83120854028. The only paperwork I have are the service records from the local GM dealership.

- Piedmont, SC, USA

Air conditioning condenser coil. Condenser coil is leaking. Truck is less than 2 years old with the problem starting.

- Chesterfield, MI, USA

I was riding on the freeway and someone flagged me down and said you car is on fire. The fire was between the cab and the bed of the truck on 3/22/2017. On 4/11/2017 is began to smell of smoke whenever I crank. The smell is coming through the vents. Also the vehicle will not pass inspection because of the emissions for the past 4 months. I am paying a note on this vehicle monthly and am not able to use it. I can't get it inspected and the registration is out therefore I cannot drive it.

- Fort Worth, TX, USA

The GMC Sierra has a terrible vibration from 70 - 80 mph. It has been in the shop 7 times over the last year, 9 new tires, and the vibration still continues. I have attempted to resolve the issue with GM but there has been no resolution. The truck feels unstable and like something is going to break on the highway which is a safety concern. This vehicle has issues and it needs addressed.

- Topeka, KS, USA

The GMC Sierra has a terrible vibration from 70 - 80 mph. It has been in the shop 7 times over the last year, 9 new tires, and the vibration still continues. I have attempted to resolve the issue with GM but there has been no resolution. The truck feels unstable and like something is going to break on the highway which is a safety concern. This vehicle has issues and it needs addressed.

- Topeka, KS, USA