Transmission shifts hard first 3 gears.rear end clunks brakes squeak when going in reverse when putting in reverse gear goes in hard seems to be doing more often

- Sacramento, CA, USA

While driving the vehicle 21oct2020 it started whining and jerking. I called the dealership to have it checked they couldn't see us, so we took it to a different GMC dealership that said the codes had not been updated, they preformed the recall and said it should be fine. Two days later it started jerking again and shut off when stopped at a light. I took it to the GMC dealership we bought it from on the 28oct2020 and I was told that the truck was fine, and that the diagnostics showed no problems whatsoever. The tech said he would drive it out of the bay, if brittany would open the door and before he could drive it through the garage bay area and out the garage bay door the truck made a crazy loud noise, jerk to a sudden stop and the transmission went out, and the truck would not restart at all and had to be towed out of the bay door. The 2019 truck has had 5 recalls for safety issues and with 40,000 miles the transmission went all the way out and the truck has been sitting there at the dealership for over a month waiting on the new transmission to come from GMC. I go in and see the transmission recall on so many 8 speed transmission which this truck has, and now I feel like I was sold a lemon and no one seems to care. % recalls and the transmission goes out completely at 40,000 miles. I am so upset about it that I do not even want the truck anymore. It is going to ruin my resale value and the lemon law should apply on a truck one year old. I have filed complaints with the dealership, and now on their front door is a sign that says they will not honor the warranty policies on any vehicle they sold after November 15, 2020. Of course they sold me zurich extended warranty too, and I can promise I will never buy GMC again. I also have a 2017 pathfinder almost paid off, that I am giving to my daughter, and I was going to get an GMC arcadia but not a chance now.

- Murray, KY, USA

Driving at roughly 3 miles per hour in 4 wheel high on a gravel road.the axle broke and the tire collapsed. I strongly believe something is defective. (maybe a weld issue?)

- Iowa City, IA, USA

Transmission shifting rough transmission shifting delay dealer company says transmission needs an update but they don't have the program

- Corpus Christi, TX, USA

First feeling was, I was driving in a parking lot going maybe 5 miles an hour and I felt a vibration in the brake pedal. Pulled onto the main road and approached a stop light when the truck stopped a little hard as I was depressing the brake pedal. As I started pressing on the gas when the light turned green, I was traveling around 35 mph or so, when the truck came to a complete stop in which myself & passenger were slightly thrown forward due to the abrupt stop for no apparent reason. The vehicle in back of me nearly rear ended me due to the abrupt stop the truck did. I immediately contacted the dealer, in which after several days in the shop, the dealer told me that GMC knew about this particular issue but has not issued a recall. The dealer was instructed to replace the transmission control module, due to a malfunction in the tcm that apparently was trying to shut the truck down completely. Therefore causing the truck to stop abruptly with no warning.

- Sparks, NV, USA

The transmissions will shudder and delay shifting gears. I have pulled into a parking lot and put it in park, then I realize I'm a foot back I put it back in drive, the car doesn't do anything for a second then it lurches forward in an unsafe / uncontrolled manner. Often backing out of the driveway, then putting it into park and the same delay then launch happens. GM has serviced it 3 times and the problems still exist but the shifting is now much more rough than before. The problem & risk continue today.

- Yorba Linda, CA, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that the electrical system in the vehicle was defective which caused delays with several driver functions. He stated that the vehicle would restart while in operation after coming to a complete stop. The contact also stated that the vehicle hesitated and jerked while accelerating without warning. The contact stated that several attempts were needed while pushing the push to start button for the vehicle to start. The vehicle was taken to mc-elveen Buick GMC (117 farmington rd, summerville, SC 29483) on four separate occasion to be repaired however, the failure persisted. The manufacturer was notified of the failures and filed two cases for the failures. The vehicle was not repaired. The failure mileage was 900.

- Monks Corner, SC, USA

Transmission slipping turning corners at 5 mph, transmission slip take off at hill stop sign, transmission hard shift 2nd to 3rd gear intermitted and vibration 45 mph to 55 mph

- Manson, NC, USA

2019 GMC Sierra shifts extremely hard when shifting from 1st to 2nd gear when accelerating after sitting idle for a long period of time. I took the vehicle to romain GMC in evansville, in and they stated that GM says this is how the transmission normally operates. This has the potential to be a safety issues as the engine goes into high revs and slams into gear, risking losing control of the vehicle, especially during icy or snowy conditions. This issue occurs daily, sometime multiple times a day.

- Evansville, IN, USA

Every single day I back out of my driveway and when I shift into drive and step on the gas the truck moves forward slightly and the rpms wind up but the truck bogs down like it's got a fuel clog then it shifts into 2nd at a high RPM and jerks forward like someone popped a clutch. This is a major safety issue because once this winter it happened and the real wheels spun and the back end slid out on the ice and the nose of my truck wound up in the oncoming lane of traffic. Dealer and GMC say that a 'hard shift' is a known issue and the truck is 'working as designed' and there is nothing they will do further. I have had it in the shop 3X already. I have read forums speaking of many people having similar issue with 2019 GMC trucks and no fix from GMC. This is not normal, safe and I'm sure no engineer designed this transmission to work this way.

- Onsted, MI, USA

Vehicle with 8-speed transmission bucks or lurches when shifting up or down from first to second gear. Sometimes it feels like it is in a collision when this occurs. Dealer referred to bulletin #4605342 and said this was normal.

- Visalia, CA, USA

The transmission shifts hard from reverse to drive. Also from 1st to 2nd when accelerating and from 2nd to 1st when decelerating. The jerk from the hard shift feels like the vehicle has just been rear ended by another vehicle and his led me hitting objects with the vehicle numerous times. This has been going on since I purchased the truck in August of 2019 and has continued. I've taken the vehicle to the dealer who has explicitly stated that the protocol is to notate the issue only. No investigation beyond that has or will be performed.

- Zachary, LA, USA

Upon acceleration my "service ESC" indicator lights came on and my brakes became nearly unusable and loose steering. I pulled into a gas station and after 5 minutes the error cleared. This happened the previous week and the dealer said they could not find any codes in the computer.

- Shorewood, MN, USA

You can constantly feel a bump, clunk & transmission slip when going from reverse to drive. This is dangerous as I was pulling a small boat and it came off the hitch hitting the trucks tailgate and causing damage to it. This will happen seconds after drive is already engaged. After 3rd time I took to dealer the mechanic gave me a GMC memo that states that this is normal for this model truck to do this. Mechanic stated GM has known about this issue for years. Are you kidding me ? sounds like poor engineering. I was never told this would happen pre purchase or I would of never bought the truck. Have had constant problems with this truck since I bought it. Have had the seat belt pillar cover fall off 3 times dealer says they will change seatbelt, waiting over 2 months and no parts or repair. I have a warning to service brake pad sensor monitor. Took to dealer and they say they can't get parts for it yet because GM is on strike and have been waiting for parts and repair for over 2 months. Have had a steering wheel column warning also. Dealer blames everything on software issue. My diagnostic report each month states truck is in perfect order even though I have had a warning light for over 2 months !!!!! now there is a recall for the seatbelt pretensioner that it might cause a fire ! what a piece of junk this truck is I tried to support the american economy by buying an american truck and look what I get ! I should of bought a Toyota Tundra !!!!!!!

- Doral, FL, USA

The contact owns a 2019 GMC Sierra 1500. While attempting to accelerate at highway speeds above 50 mph, the speed would not immediately increase and the vehicle drastically hesitated to accelerate. The failure occurred in sixth, seventh, and eighth gears. The vehicle was taken to ancira GMC (30500 I-10 w, boerne, tx) where the failure was duplicated. The contact was informed that the vehicle was operating normally. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 1,800.

- Fair Oaks Ranch, TX, USA

The contact owns a 2019 GMC Sierra 1500. While driving 10 mph, the contact heard an abnormal noise and the vehicle began to hesitate. There were no warning indicators illuminated. The contact also stated that the vehicle downshifted from third to first gear independently. The vehicle was taken to geoff penske Buick GMC (located at 100 S museum rd, shillington, pa 19607, (610) 370-6673) to be diagnosed, but the failure could not be duplicated. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 5,500. The consumer stated when at a traffic light car, it clunks and dropping into first gear when coming to a stop. When stopping for traffic the transmission seems to 'clunk' as if it is in a higher gear and then drops into first after the vehicle comes to a stop. Feeling like the gears are moving when the vehicle is not. When leaving a stop it sometimes hesitate and the engine will rev like it is in neutral then quickly lunge forward at times so hard it feels like it has been hit from behind.

- Wyomissing, PA, USA

Recently purchased a 2019 GMC Sierra and it shifts hard at lower speeds or when moving from a stopped position and then accelerating, or when decelerating. While parking the car at one point the shift was so hard that it felt like a hit, and then the kids confusedly asking "what was that?". GM is giving us the runaround and unwilling to fix what I have now found out, has been a known problem. They based everything out of what the modules report when the car is hooked up to the computer. Basically, if the modules are ok then the car is reportedly ok. Not the case.

- Palm Bay, FL, USA

Transmission jerks into gear when slowing down. When speeding up truck will jerk. Service manager said it was normal. Truck feels like it the rear end falls out when stopping.

- Lenoir, NC, USA

Rear wheel brakes unexpectedly lock up after driving over a hour or more

- Brooklyn, NY, USA