2017 GMC SIERRA 1500 Complaints

Driving on highway at 70mph loss of power. Transmision slipping and vehicle rapidly lost speed creating a very hazardous situation. Was able to barley get of highway safely going down to 40mph. Vehicle went into limp mode.

To whom this may concern, This gmc truck with the 6.2 has had constant engine issues regarding the lifters failure causing the engine to destroy itself internally I’ve had to get it repaired every 3 Months on average there’s also a class action lawsuit that applies only to the 2025-2020 years however they are the exact same engine in the 2017. The transmission is not in sync with the motor having a late take off or sounds like the gears are grinding between shifting

Gear slipping since I’ve had the truck. Replaced parts of motor, new transmission installed and still gear slipping entering the second gear. A big jolt happens every time I accelerate and when I slow down about the 10 mph mark it jolts again. Spent well over $10,000 on major truck repairs. I just don’t understand how this truck has 0 recalls. My truck is similar to all of the v8 Sierras of that year and I strongly feel it should have been recalled due to the gears slipping and not enough power.

i have 2017 gmc sierra 1500 6.2l engine i have maintain my service on this vehicle and now facing a complete engine failure due to the poor design of the engine by gmc. i have spoken with alot people and dealer mechnics and they all agree gmc and chvrolet know that this is a bad design but refuse to acept responsiblity for it. there are tousands of people with this same issue we cant fight this on our own we need your help please.

I was test driving this 2017 Sierra 1500 SLT and experienced issues while braking. Issues with brakes as the vacuum level drops the brake assist decreases which meant I had to use excessive force to get the vehicle to stop. No warning light, nothing to tell me there is a low pressure brake. This could result in a fatality if a small animal or child walks/runs in front of the truck while truck is moving forward or backwards at low speeds. The dealer doesn’t acknowledge any recall on this vehicle because it isn’t noted as such with GM. I worry that all of the other recalls (4 others) may be an issue too, which include Frontal Airbags not deploying during an accident, faulty wheel sensor causes opposite wheel to engage and cause the vehicle to pull to one side, fuel leak, and child seat anchoring restraint instructions not included in the owners manual.

2017 GMC Sierra almost hit a parked car in the store parking lot. Pedal was hard push down . Also when moving truck around in my yard at times the pedal is hard other times sounds like there is Air in the lines. Truck has all new Brakes and Rotors all the way around. I pull a Camper and Side x Side at times so this is scary.

My 2017 GMC Sierra Brakes started acting up a slow speed it would seem like there were no Brakes or Pedal would push very hard. I pulled into a parking space at the store and it was like I had no Brakes had to push pedal very hard and Thank god there wasn’t a car in front of me because I would have hit it. The truck has new front and back Brakes and Rotors put. The truck was throwing some codes and 3 out of the 4 codes pointed to faulty Vacume pump. I pull a camper and sometimes a side x side so this is very concerning and I hoping to get this expense covered by Recall like all the other Models with the same issues. I really don’t know why my truck isn’t being Recalled. This has been a good truck for me no complaints tell this.

The vehicle consistently shuts off unexpectedly when trying to park or slow down, making it difficult to steer or control.The electric power steering stops working, especially when turning at low speeds.

Lifters and rollers failed. Vehicle is at a repair facility and it has been confirmed that the rollers on the cam seized causing metal shavings to build up in the oil. No symptoms or warning lights showed up before the problem was identified.

strong smell of gasoline nauseating, Attempted to start vehicle intense spraying of gasoline all around gas tank vehicle started – dripping profusely around gas tank over chassis frame, Rear driver side of vehicle 16 June 2025