The contact owns a 2015 GMC Sierra 1500. The contact stated that while driving approximately 35-50 mph, the contact noticed a minor shaking coming from the vehicle. The contact took the vehicle to love Buick GMC (736 Saturn pkwy, columbia, SC 29212; (803) 732-6500) who flushed and refilled the transmission fluid however, the failure recurred. The contact returned the vehicle to the same dealer who performed another transmission flush however, the failure persisted. The contact stated that the vehicle drove rough and that the check engine warning light illuminated. The contact used a dtc scanner and retrieved a code related to the transmission control module and temperature sensor. The vehicle was then taken stokes trainor Chevrolet Cadillac Buick GMC (2004 wilson rd, newberry, SC 29108; (803) 792-4763) and the contact was informed that the internal wiring harness needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the issue and informed the contact that the VIN was included in a special coverage program. The approximate failure mileage was 75,000.

- New Berrry, SC, USA

When I was driving my truck off the highway onto the main road where I was going I noticed there was an issue with my truck. After coming to a stop at a red light once it turned I accelerated and suddenly felt a jerk from the truck and heard a loud whistling noise. It did this multiple times about 5-6 time every time I would accelerate from a speed of 30-40. I decided to drop it off at my local GMC to get it looked at. They called me the next day to pick it up since they ran it through diagnostics and didn't find an issue with the vehicle. Once I got there I demanded for the mechanic to come drive the truck with me to see what the issue was and they decided they needed to keep it for a couple of days to get it looked at. They then called two days after and said that the transmission was messed up and needed a new one totaling the cost to $5346.07 which is certainly not something we can afford right now! I don't understand how they didn't see the issue the first time they diagnosed it?? this is something that needs to get recalled I have seen many similar issues.

- Foley, AL, USA

The vehicle is stalling when braking and getting ready to turn. My truck is showing stabilitrak service intermittently and I've almost been in a crash 3 times because of this. The vehicle only restarts after placing in park. This is not safe when in traffic. There seems to be no recalls and no known cause. Someone is going to die if GM doesn't fix this. I've been on forums and it's a common problem. It should be fixed by GM if it is so common. This happens when approaching cross traffic at an intersection and I lose all control of steering braking and power to the truck.

- Gillette, WY, USA

The contact owns a 2015 GMC Sierra 1500. The contact stated that the radiator tube failed and allowed radiator fluid to leak. The vehicle was taken to broadway Chevrolet automotive (2700 ashland avenue, green bay, wi 53404, (920) 498-666), to be inspected. The mechanic replaced the radiator and thermostat. The vehicle was repaired. The manufacturer was notified of the failure. The contact was informed that the vehicle was no longer under warranty. The failure mileage was 78,000. The VIN was invalid.

- Green Bay, WI, USA

The contact owns a 2015 GMC Sierra 1500. While driving and turning into a shopping center, the entire vehicle shut off, including the engine, electrical system, and instrument panel. The steering wheel also seized along with the windows. When the contact stopped and restarted the vehicle, the control panel and odometer display delayed to show the correct reading and the clock had to be reset. The display instructed the contact to roll the window down and back up. The contact had to wait several minutes to get power to restart the vehicle. The failure had occurred three times every three months. The contact was able to restart the vehicle and drive home. The vehicle was taken to regal GMC (2615 lakeland hills blvd, bldg 3, lakeland, fl 33805, (863) 262-4222) for a recall repair. The dealer was unable to locate any failure codes. The contact was informed to schedule another appointment. The manufacturer assigned a case number to the contact and stated that an urgent senior representative would call the contact back. The failure mileage was 25,000. The VIN was unknown.

- Lakeland, FL, USA

Brakes wouldn't stop

- Fountain Inn, SC, USA

The contact owns a 2015 GMC Sierra. While driving low speeds, the vehicle violently vibrated and made an abnormal noise. Also, the stabilitrak and check engine indicators illuminated. The contact mentioned that the check engine indicator periodically illuminated and flashed. Also, while driving, extra force was needed to depress the brake pedal and stop the vehicle. The vehicle was taken to boulevard Buick GMC (2800 cherry ave, signal hill, ca 90755, (562) 492-1000) where the contact was informed that the vehicle misfired and the entire engine needed to be diagnosed. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 59,000.

- San Pedro, CA, USA

The contact owns a 2015 GMC Sierra 1500. While driving 70 mph, the vehicle lost power and turned off. Also, "lower driver window" appeared on the instrument panel. The contact was able to restart the vehicle and continue driving. The failure occurred seven additional times. The vehicle was taken to smail Buick GMC Cadillac (located at 5116 us-30, greensburg, pa 15601, (724) 798-0320) to be diagnosed, but they were unable to duplicate the failure. The vehicle was not repaired. The manufacturer was notified. The failure mileage was 53,000.

- Greensburg, PA, USA

The contact owns a 2015 GMC Sierra 1500. While an independent mechanic was inspecting the vehicle, the contact was informed of a radiator leak. There were no warning indicators illuminated. The vehicle was taken to goodwin Chevrolet brunswick (located at 195 pleasant St, brunswick, me 04011, (866) 675-8244) where it was diagnosed that the radiator and air conditioner condenser needed to be replaced. The contact also stated that the brake pedal was difficult to depress and the windshield wipers failed to function. The brake and windshield wiper failures were not diagnosed. The vehicle was not repaired. The manufacturer was notified. The failure mileage was 107,000.

- Durham, ME, USA

The contact owns a 2015 GMC Sierra 1500. The contact stated that the air conditioner was not functioning properly. There were no warning indicators illuminated. The vehicle was taken to sunrise Buick GMC covington pike (located at 1800 covington pike, memphis, tn 38128, (901) 201-6267) where it was diagnosed that the condenser needed to be replaced. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was 85,000.

- Memphis, TN, USA

Purchased truck new 37 months ago, has 938 hours on the engine and 47500 mostly highway miles. No accidents. According to the dealer there is a small leak in the radiator, top right side(from the driver's seat), cost to repair $1200.

- Arvada, CO, USA

I only have 57,000 miles on my truck, which is why I am reporting this. The truck turns off completely. I have been going to make a right/left turn and the truck shuts down completely. I have no power steering and limited brakes. This has happened to me twice now. I am lucky enough that I am strong enough to turn the truck without power steering otherwise I would have hit vehicles both times this happened. There has to be some type of electrical flaw that is making this happen. I want to get this resolved before my insurance company has to get involved because I am in a car accident. If this is something the manufacturer takes care of that would be great, otherwise I would just like to know if someone else has had this issue and has found the resolution.

- Paradise Valley, AZ, USA

The contact owns a 2015 GMC Sierra 1500. The contact took the vehicle to astro Buick GMC (2238 white hall blvd, white hall, wv 26554, (304) 366-4460) for the air conditioner not functioning properly. The contact was informed that the condenser needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The VIN was not available. The failure mileage was approximately 25,000.

- Fairmont, WV, USA

Air conditioning system failure. Vehicle was taken to the dealership for other recall related service. I further requested they check the HVAC, as it stopped working approximately 3 weeks ago. I had it recharged once, and the charge failed to hold. The GMC dealership in mobile, al explained they have received a large number of complaints about failures occurring to the ac system. He explained it centers around failure of a weld in the coils. He stated the repair costs approximately $1,300 at the dealership...he was discounting the cost to $950 to compete with the local vehicle ac shop which charges approx $800 for the same service. He advised he was not aware of a recall for the problem and further advised he was surprised GM hadn't recalled, as it's a known problem with the system. I am filing a formal complaint in hopes others have done the same, as GM should be responsible for correcting this failure.

- Theodore, AL, USA

When I first got the truck the brakes operated perfectly fine after about three days the brakes on the front of the truck would lock up while I was driving and would not release. After two sets of calipers two sets of brake pads a set of rotors a two weeks go by with the mechanic trying to figure out what is wrong with this truck. They then replace the brake master cylinder, there was no improvement. Turns out to be the brake booster had failed along with the hydraulic ABS control unit. There were no warning lights on whatsoever the whole entire time the brakes were locked up the ABS light didn't come on until the brake booster was replaced indicating that the ABS control unit was also bad. Now I am experiencing a ticking coming from the engine. The ticking occurs at idle end as the throttle is being activated. However the local dealership has refused to give me any information as of why it could be making this ticking noise or is just unwilling to say anything.

- Paw Paw, MI, USA

This complaint is regarding excessive surface rust on not only the frame of my truck, but on critical engine component clamps in the engine bay. Any screw style hose clamp in my engine bay are rusted worse than my other 9 year old car with 102,000 miles on it. I wash my truck, including undercarriage, periodically throughout the winter to try and keep the salt off. My truck is a 2015 with 40,000 miles, and just recently, the rust had completely eaten through the lower radiator hose clamp causing all the engine coolant to leak out. I noticed the rest of the clamps within the engine bay to be in the same condition, along with the frame, and suspension components. It is clearly only a matter of time before they fail while I am driving, which could cause a failure of any system using one of these rusted clamps, such as the brake lines, power steering lines, oil lines, or transmission fluid lines.

- Strongsville, OH, USA

When making slight left turns, the truck would flash stabilitrak on the display and the steering wheel would automatically pull out of my hands and make the wheels straighten up. The radio would then go dead and then 5 to 10 seconds later the entire truck would turn off. This happened while driving down the road. This happened on 2 separate occasions with no other warnings. I contacted GMC and they have not given me any type of answer or assistance.

- Seymour, TN, USA

Ac blowing warm air - may have a condition where thermal cycling on the combination transmission fluid/oil and ac condenser cooler creates a crack that may allow refrigerant to escape. This condition consequently may deactivate the ac system.

- Livermore, CA, USA

Takata recall. I recently called the dealership where they confirmed multiple calls on the ac condenser leaking freon. We have two 2015 GMC Sierra with the same leak. A service center employee/mechanic at bob brockland in columbia il verified multiple complaints.

- Belleville, IL, USA

My ac conditions developed a pin hole leak along the seam/braze.

- Livermore, CA, USA