I was backing my boat into the water at a boat ramp and my brakes got very hard to push when I was backing into the water. I had to stand on the brakes to get it to stop, if my wife had been backing the truck in, it would have been in the lake. I see that there are no recalls on this vehicle. I bought it about four months ago and don't know the history of any recalls that have been done. I also had the transmission problem with the shimmy, and per the GM dealer flushed the fluid and the shimmy has all but disappeared. I am glad, because when I ask if it didn't repair it would the transmission be covered under warranty, he said no because of the mileage. These reasons are probably why the guy traded it in in the first place.

- Pacolet, SC, USA

no breaks loud sound grabbing breaks growling sound very loud sweeking sound happens all time

- Hiawassee, GA, USA

Stiff brake pedal at low speeds and brake assist error message

- Plainville, GA, USA

Low speed braking issue. Was in a parking lot trying to park moving about 1 or 2 mph. Truck would not stop and it was like there where no brakes until I pressed as hard as I could. Does not do this at normal speeds

- Williamsburg, MI, USA

On 9/2019 they supposedly did the reprogram to fix the hydraulic braking issue on my truck. It is now doing the very same issue again. I go to slow down or stop and feel like its not slowing down and I pump the pedal to get a good pedal to stop. It does this quite frequent now. Is there anyone who can help me see if this can be done again under recall?

- Cape Girardeau, MO, USA

This happened multiple times. The brake pedal is hard at low idle, and you have to stand on brake pedal to stop the vehicle. Typically happens when trying to back in a parking spot or in stop & go traffic the brake pedal becomes hard to push and truck doesn't stop as quickly

- Shoshoni, WY, USA

I was driving 50mph and was behind a semi as I started to pass him I noticed an oncoming car and decided there wasnt enough time to pass so I started to push the brake pedal to slow down and get back behind the semi and the brakes locked up which produced an uncontrollable spin in which I did a 180 degree spin and ended up going into the ditch backwards and tipped over on my side no airbags deployed either.

- Canton, IL, USA

When I apply the brakes it doesn't want to stop and I have to push it down again almost like there is a issue with the vacuum on the brakes but it says my vehicle is not affected by the recall but the symptoms are exactly the same as the recall.

- Cape Girardeau, MO, USA

As I was back my boat in at boat ramp brake pedal was hard to press down had to almost stand on them to keep from truck going in the water. I researched this and seen where GM has a recall on the vacuum pump but I call the dealer they told me they wasn't a recall.

- Middlesboro, KY, USA

GMC Sierra was brought to dealer for existing recall regarding braking. Dealer indicated recall had been resolved. While backing the truck on 3 separate occasions since recall addressed, brakes become much less responsive with clicking sound. Brakes become hard to press and do not stop vehicle complete. This also happened while towing a boat down ramp. The vehicle has 28,000 miles and the issue did not occur prior to about a month ago. The most recent time was tonight while backing on level ground into garage. I have not had an accident as a result of this, but the recall was not adequately performed or did not address the issue.

- Kingsport, TN, USA

At low speed or most of the time backing up brakes do not work well at all. Need to push very hard.

- Shelby Township, MI, USA

I was driving on I-4 towards orlando at 70mph following a safe distance traffic was coming to stop and I went to brake and the brakes wouldnt work properly and cause me to pull vehcile to one side causing me to crash saw life flash before eyes. Thankful to be alive, comes to find out there was a recall on

- Tampa, FL, USA

Almost collided with other cars in parking lot because the brakes weren't working right also transmission shimmies between 50 and 60 mph

- Spring Hill, FL, USA

Felt strange brake pulse turned into parking lot and power braking failed. Barely got truck stopped before hitting another car. Truck had to be towed to dealership

- Lewisburg, OH, USA

When I going in reverse the pedal brake doenst work

- Coral Springs, FL, USA

My truck braking system is going to the floor board of my truck. Making very hard for me to stop. They call themselves fixing it but the same problem is back. Really tired of this problem and other spend $1000 on springs and the vehicle was only a 1 1/2 old was told the warranty on cover it if they were broken a lie the dealership told me.

- Houston, TX, USA

Our truck is less than three years old with approximately 69000 miles. The transmission just started slipping out of the blue while driving thru a neighborhood. While in drive it would move but once accelerating it would rev up and not change gears. This happened without warning, without an engine or warning light. We do all the necessary regular maintenance. In addition two years ago while the truck was a year old, the brakes went out while driving on the interstate. I guess it was the brake vacuum pump or whatever that didn't allow the brake peddle to be pressed which provided me with no brakes. Again with absolutely no warning! this later became recall issue but not before it had already happened to me! I understand there is a class action law suit against GMC for transmission problems and I would consider being a part of this. This is a 50;000$ and relatively new truck, this is unacceptable! the dealer now wants over 4000$ for repairs.

- Dickinson, TX, USA

I own two GMC Sierra trucks years 2014 and 2017 both trucks have severe lock up issues. I have gone to the dealership numerous times and they reset the computer but the brakes still lock up. This is an extreme safety hazard, and my wife and I are extremely scared that we will be in a fatal accident. There has been several times where we have almost hit a car or person walking. I am really concerned that these vehicles will cause an accident. My children are always in my trucks end it is extremely scary when every time I hit the brakes I am not sure if it will stop or not. This is an imperative matter.

- Santa Maria, CA, USA

The contact owned 2017 GMC Sierra ld. The contact stated the vehicle was serviced for NHTSA campaign number: 19V645000 (service brakes, hydraulic) at local dealer don johnson motors Chevrolet Buick GMC (734 West ave, rice lake, wi 54868), however, the failure reoccurred. The contact stated while driving 70 mph traffic has stopped. The brake pedal was depressed however the vehicle failed to stop, causing the vehicle to hit another vehicle and guardrail.the contact stated that the air bags deployed. The contact stated no warning light was illuminated. A police report was filed. The vehicle was towed to a tow ard, after eleven days it was towed to local dealer palm Chevrolet (2300 sw college rd, ocala, fl 34471) where it was diagnosed that the vacuum pump, senor, and a belt needed to be replaced.the vehicle had not been repaired as of yet. The contact stated the vehicle was traded for a 2018 Chevy Impala.the manufacturer had been informed of the failure and a case was opened. The failure mileage was approximately 38,000.

- Winter, WI, USA

The contact owns a 2017 GMC Sierra 1500. The contact stated that while driving about 50 mph, increased braking effort was required in order to stop the vehicle. The vehicle was taken to the dow lewis motors dealer (530-763-2923, located at 2913 colusa hwy, yuba city, ca 95993) where it was informed of NHTSA campaign number: 19V645000 (service brakes, hydraulic) however, it was confirmed that the parts were not available. The manufacturer was made aware of the failure and was not able to confirm when the parts were to become available. The contact was not provided a loaner vehicle. The vehicle was not repaired. The failure mileage was approximately 60,000. The VIN was not provided.

- Woodland, CA, USA