10.0
really awful- Crashes / Fires:
- 14 / 2
- Injuries / Deaths:
- 2 / 0
- Average Mileage:
- 43,105 miles
About These NHTSA Complaints:
The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.
« Read the previous 20 complaints
The contact owns a 2015 GMC Sierra 1500. While operating the vehicle at night, both the low beam and high beam headlights illuminated extremely low, which created a visibility hazard for the driver. Also, while driving in forward and reverse, the brake pedal became extremely hard to depress and the stopping distance was extended. The contact indicated that the failures were more present while driving at low speeds in reverse and after pressing the brake pedal multiple times. The cause of the failures was not determined. Charlie's Chevrolet (1412 us route 202, winthrop, me 04364) and the manufacturer were notified. The failure mileage was 14,000.
- Fayette, ME, USA
2015 GMC Sierra denali. Consumer writes in regards to brake pedal pivot bolt sensor failure.
- Washingtonville, NY, USA
Brakes wouldn't stop
- Fountain Inn, SC, USA
The contact owns a 2015 GMC Sierra 1500. While driving at low speeds, the brake pedal was depressed, but the vehicle failed to stop. The contact stated that extra force was needed to depress the brake pedal and stop the vehicle. The vehicle was taken to tustin Buick GMC (1 auto center dr, tustin, ca, (714) 460-9877) where it was repaired per NHTSA campaign number: 19V645000 (service brakes, hydraulic); however, the remedy failed to repair the vehicle. The contact mentioned that the failure still occurred. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000.
- Orange, CA, USA
The contact owns a 2015 GMC Sierra 1500. While braking or making a right turn while braking, the vehicle lost power. The failure occurred three times in traffic without warning. In addition, the stabilitrak warning indicator illuminated. The vehicle could not be driven. Palm dale Chevrolet (1160 motor ln, lancaster, ca 93534, (877) 385-0885) was contacted, but they did not assist. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and did not assist. The failure mileage was 58,000. The VIN was unknown.
- Lancaster, CA, 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 30 mph, the contact attempted to depress the brake pedal; however, the pedal was extremely stiff and hard. The contact stated that the service brake assist warning indicator illuminated. The contact was able to continue to drive, but had to use two feet to stop the vehicle. The contact drove the vehicle to an independent mechanic who diagnosed that the brake vacuum pump failed and needed to be replaced. The mechanic stated that the vehicle needed to be towed to a dealer. The vehicle was towed to jerry smith Chevrolet (12484 reservation rd, anacortes, wa 98221, 360-610-4128), but was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was approximately 57,000.
- Oak Harbor, WA, USA
GMC truck brake pedal will become very stiff and difficult to depress at low speeds after brakes are hot (driving through mountains). This appears to be consistent with the GM brake booster issues that appear online.
- Tega Cay, SC, 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
Low speed breaking pedal hard vehicle will not stop can hear clicking noise condition worst while in reverse almost caused 3 accidents contacted dealer they say they know of the problem and cost to fix is around $1000 if this is such a common issue like my dealer said why do I need to pay to have it fixed it's a safety issue that GM knows about. This issue has been on going for over a year with my truck.
- Hermon, ME, USA
While backing up. Brake pedal went all the way to the floor and was unable to stop. Managed to get it to stop. I have heard about a brake booster issues.
- Mountlake Terrace, WA, USA
The brake turn hard when I am going in reverse in a slow speed.
- Pontotoc, MS, USA
Brake pedal stiff/hard when applying breaks. Problem occurs periodically within the city and highway.
- San Antonio, TX, 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
When the truck's vacuum pump fails, the brake pedal becomes very hard to push. The truck does not stop at low speed when this happens. The first time this happened, I was backing into a parking space at christmas tree stand. I nearly backed into the tent and persons loading the christmas tree in the truck. The second time this happened, I was parking my truck in driveway. I rolled about 6' to 8' before stopping. I nearly hit my house. GM issues a "special warranty" but they refuse to cover the repairs because of the vehicle mileage. This same issue is well documented by other GM truck owners for 2014 to 2018 model years.
- Covington, LA, USA
Brakes do not work when in reverse or at low speeds. Problem was there the day I purchased the vehicle. A couple weeks after purchase I backed into vehicle in a parking lot. I was told it was "normal" after almost having a wreck I did some research. How is this not nationally advertised as a recall yet? this is a huge safety negligence on GMC's part. The vacuum pump is known to fail by every dealer I have called. Also everyone I know who has the same model truck also lives with this problem.
- Pearland, TX, USA
When coming to a stop the brake pedal gets hard to depress and the rate of deceleration chages makes it hard to jusge when and where the vehicle will end up.
- Braintree, VT, USA
While in a drive through I was creeping up and when trying to come to a stop my brake pedal would not depress all the way as normal and took a longer than normal time to stop even with both feet pushing on the brake pedal. I ended up rolling into the car in front of me. I took the car to the dealership the next day and was told that my vacuum pump/brake booster needed to be replaced.
- Smyrna, GA, USA
When you step on the brakes in motion the brake pedal is hard and vehicle takes longer to stop.
- Thomasville, GA, USA
- West Lafayette, IN, USA