2015 Chevrolet Silverado 1500 acceleration problems

Filed Nov 15, 2024 · Acceleration, Engine · MI · crash

I purchased a Brand new Chevrolet Silverado 1500 LT Z71 in2015. While still paying on this vehicle I had an issue with the engine bogging down and it would almost die. It would jerk and shake terribly to the point it just shut down. I took to Royal Chevrolet and they found that it had a broken Valve spring on Cyl 7. This went on and on they had this vehicle for a total of almost 7 months before they put 1 last engine in it. The 1st thing I did was drove down From Michigan to North Carolina to visit my daughter. Plenty of Mountains and a lot of driving as I drove 14 hours straight by myself. The engine that they had just put in started Chugging and choking and it stalled on the highway going through the mountains and I was hit in the rear end and the other driver never stopped. I managed to get it running again. Prior to leaving for North Carolina I ordered what they call a tuner where I could deactivate the AFM system and stay in 8 Cyl mode at all times. I had it sent to her house. I installed the program. Keeping in mind #1 I was rear ended. And every single time there was an issue it was Cyl#7 on all the previous engines. I talked to the Lead man at Royal chevrolet about all the issues and he said they know all about it and its a joke. They tried it on Cadillacs back in 1975 and recalled every one of them and turned it off. On my way back home not 1 single issue in fact and I sill have it displayed on my dashboard I actually got 26.2 Miles per gallon in V-8 mode in the mountains. I have driven to NC every year since before I even owned that truck and have never seen milage before or since. The AFM system is nothing but a ploy to get people to buy junk. Could someone been killed? Most certainly. I told the manager 1 more engine and I have a Friend cut stickers of lemons out and put at the main 4 corners in our town. I still have that truck and currently have 128,000 miles on it and I had to pay $600.00 to fix it myself. And GM thinks its a joke. I called GM

Filed Oct 3, 2023 · Acceleration, Transmission · TX

The transmission makes a Clunking sound when i put it in Drive or Reverse gear, plus it slips between gears when i start to drive off and it hesitates to shift between gears

Filed Jan 24, 2023 · Acceleration, Brakes · CA

While driving at low speeds (approx 5-10 mph) the brake pedal became stiff and very difficult to stop. This issue happened with no prior warning or indication of the issue. As a result of this issue severe damage to personal property housing and vehicles was nearly missed. Upon research this has been a common issue for GM vehicles specifically trucks and SUVs.

Filed Oct 9, 2022 · Acceleration, Transmission · WV

My wife came home and told me there was something wrong with our truck. I went and inspected it and found nothing. The next day i drove the truck about 30 miles up river. Coming home I was traveling around 55 mph the truck came to a sudden slow down as if I had locked up the brakes then drove fine again. This happened three or four times not as bad as first time. While in town stopped at a light it tried to take of. Not like something giving it gas but like it was in gear and the brake wasnt going to hold it. Almost put me into a school bus ahead of me. Then the rest of the way home it kept binding down and releasing then binding back down. Hard to control but not necessarily a break problem. Its something else. I have worked on vehicles all my life, professionally for 25 years. I never seen a vehicle do this. It has to be in the transmission. Maybe something in the torque converter would be my guess. I have heard of the issues with the 8 speed ever sense this happened I have parked this truck. I cant afford a need transmission that doesnt actually fix the problem from what i hear. I feel GM needs to do something here. At least pay for the parts to fix it

Filed May 14, 2022 · Acceleration, Engine · OK

I am having issues with my transmission. When I first turn on the truck in the morning, put it in gear, and lightly accelerate the truck accelerates way too fast then cuts out the power. It is enough to throw me forward or back in my seat and it honestly is frightening. I am also having problems with the vehicle shifting incorrectly causing me to have no power or a sudden surge of power. This is usually when i have slowed down and them am trying to accelerate again. Also, When I am slowing down to stoplights, the vehicle will occasionally shift down to too low of a gear and act like i am slamming on the brakes. I have had several close calls with this truck due to this issue. Gm knows about the issue and has refused to recall the vehicles that are having these problems. They are recommending changing out the fluid multiple times at the owners costs. This has resulted in several class action lawsuits. They also have gone to the lengths of changing warranty coverage to no longer include abnormal shifting. This is not safe. This is causing accidents and they are actively covering it up. Please help the hundreds of thousands of people that are having issues. We need your help, I need your help and gm is no longer standing behind their vehicles.

Filed Aug 10, 2021 · Acceleration, Electrical · TX

The system that failed is the speedometer display and radio display while driving. This can be dangerous as I do not know the speed I am driving. This can also be dangerous as the display includes the screen for the backup camera that turns off without notice while backing up. The problem has happened many times in my 2015 Chevrolet Silverado. I have a 2017 Chevrolet Silverado for a company vehicle and the issue occurs in it, as well. I notified the GM dealership where both vehicles were purchased and they said the screen could be replaced but would be very expensive. No warning lamps or messages occurred. The screen jumps around a lot and occurs at various times (morning, afternoon, warm or cold weather, etc.).

Filed Mar 6, 2020 · Acceleration, Engine · 112,000 miles · NC

Rpms were rising above 6,000 without any power. Randomly while on highway, truck only had 112,000 miles on it and had to have a new transmission put in. And has had many other issues such as the lifters closing while on the highway and brake issues. The worst model truck ever made.

Filed Feb 19, 2018 · Acceleration, Engine · TX

Transmission problems. When reversing up a driveway the truck will stall as the gas is pressed it will rev up but not go anywhere, then jump into reverse as if the petal was floored. Also some times when entering the highway the transmission doesn't shift into the correct gears also jumping into gear which could cause accidents.

Filed Aug 8, 2017 · Acceleration, Suspension · 25,600 miles · WA

Tl* the contact owns a 2015 chevrolet silverado 1500. After the accelerator pedal was depressed, the vehicle vibrated severely without warning. The dealer and manufacturer were not contacted. The failure mileage was 25,600.

Filed Dec 12, 2016 · Acceleration, Engine · 33,000 miles · CO

Tl* the contact owns a 2015 chevrolet silverado 1500. While driving approximately 45 MPH, the check engine indicator illuminated. The vehicle started to decelerate when depressing the accelerator pedal. The vehicle was taken to the dealer, but was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 33,000.