What 427 owners told NHTSA about the 2015 Chevrolet Suburban

When coming to a stop or backing from my inclined driveway the foot brake requires a hard push because it seems to lock up. I couldn't stop when braking. The problem is recurring. It has not been inspected for this recurring problem and no lights or warning signal appears on the dashboard.

NHTSA ODI 11740968

When our new mechanic was checking over the car, he and his other mechanic both noticed that there was an increased brake pedal effort even though the brakes were in ok condition. Every time I’ve had the car serviced I have them check the brakes because they feel off. The car stops and the brakes check out with previous mechanics but something doesn’t feel right. Our new mechanic then gave me a recall bulletin from GM N192268490 and said he thinks our car is experiencing this issue. The recall was attached to our VIN when the mechanic pulled it up but when we called the dealer and checked the NHTSA website, my VIN number was apparently not part of the recall. I am writing to state that I believe my car may be experiencing the issue stated in the recall bulletin as per my mechanic’s findings. Attached is a copy of the recall bulletin given to us by our mechanic. Please advise.

NHTSA ODI 11727914

The braking system on my 2015 Chevy Suburban LTZ failed at slow speeds in a parking lot. I have replicated the issue in both forward and reverse. My family's safety was put at risk in that while backing up out of a parking spot the brakes failed completely and I had to push extremely hard on the brake to get the vehicle to stop. That same behavior occurred while pulling forward into a parking spot, almost hitting the car in front of me. I took the vehicle into a Chevrolet dealer today indicating the symptoms and they said there was no recall attached to my VIN. This exact same behavior in my vehicle is described in [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11700962

If I pull up to a parking spot and I’m slowly creeping into the spot, say at a popular supermarket, and slowing down the brake pedal stiffens up and it’s almost impossible to press. I feel like my truck may not stop. If I’m on a slight incline and in a line behind another vehicle, I’ve noticed the brake pedal stiffens up then as well. Awhile ago I thought there was a recall for this for my truck and it was something about the vacuum in the brake pedal. This is a super problem. I have five kids and we are on the road a lot. This has been happening a lot but most recently would be today.

NHTSA ODI 11678831

Often the brake pedal becomes very hard to push and braking is extremely hindered. There is a recall for this issue that has been done but the vehicle is experiencing the exact same problem again. Dealership says that the vehicle time has expired for anything to be done again. Recall was performed only 5 years ago.

NHTSA ODI 11656458

While driving approximately 70 miles an hour and trying to switch lanes, we got a stabilitrack warning and the car shut off for a second and then came back on. the weather was nice and there was no snow or any other adverse conditions. This happened a couple more times on the ride and then when we tried to turn into a parking spot it shut off completely and we had to restart it. We turned stabilitrack off and the car was ok for a couple of short drives. Then driving late at late and we passed another car the same thing happened. Then when we tried to turn our brights on we got the same message. Then we got a brake assist message and then we got a collision alert. The headlights were flickering the rest of the drive and we couldnt use our brights. We had our 4 children in the car and it was shutting down at high speeds and very scary. I looked up our vin and it said that the recalls had been worked on but I dont remember this being done. This has never happended before this. our car would be available for inspection if needed.

NHTSA ODI 11619670

The contact owns a 2015 Chevrolet Suburban. The contact stated that upon coming to a complete stop, he observed that the brake pedal briefly depressed all the way to the floorboard. The vehicle returned to normal functionality, but the failure became a regular occurrence. The contact stated that the failure only occurred upon coming to a complete stop. The power assist brake warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 19V645000 (Service Brakes, Hydraulic); but the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 126,000.

NHTSA ODI 11614069

When driving through city traffic basically stop and go the brake pedal gets very hard and the car does not stop as smooth or almost not at all. It gets very dangerous.

NHTSA ODI 11611671

Continuous "Trailer Brake System" alarm makes the vehicle undrivable due to to distraction

NHTSA ODI 11602421

Braking is diminished when vehicle is moving at slow speed and brake pedal is pressed. The vehicle brake assist engages by pulsing, increasing the braking distance by not stopping the vehicle no matter how hard the brake pedal is pushed. Emergency brake is used to prevent vehicle from colliding. This may be related to NHTSA 19V645

NHTSA ODI 11572288

I purchased my vehicle after the recall 19V-645 regarding the brake pump was issued. My vehicle was a part of that safety recall, and the module was reprogrammed in September 2019 (N192268490-01). The pump has not been previously replaced according to service records. I purchased my vehicle from a dealership in April 2021. I recently (late 2023) started having issues with my brakes, having increased brake pedal effort, a hard brake pedal, and increased stopping distance. I have had the brake assist alert come on several times. The issue happens more frequently at lower speeds. My park assist alert also comes on regularly when applying the brakes. I have taken my vehicle to GM several times regarding the park assist issues, but they have only cleared the computer codes and cannot figure out why they keep coming back, as there is no detectable issues with the system. I have also brought my vehicle in due to the adaptive cruise control, as it has also caused issues while using it. It will often apply brakes if it detects a vehicle in another lane while driving, causing the vehicle to “slam” on the brakes going at high rates of speed (I.e. driving on the interstate at 80 mph) and has nearly caused accidents, as the vehicle becomes hard to control, and the risk of following vehicles not having the reaction time to avoid a rear-end collision is increased. My particular vehicle does not have an option to switch between regular cruise control, and adaptive cruise control. After talking with GM, they informed me the only way to “fix” the issue is to completely replace the module with an updated module that allows the option to turn off the adaptive cruise control, which is quite costly to the consumer. My vehicle is currently at a GM service department, and has been diagnosed that the brake pump has failed, and needs replaced. They are claiming that it is not covered under the recall. It is not covered under GM’s extended warranty due to mileage restrictions.

NHTSA ODI 11568885

Hard breaking at slow speeds. Risk of accident to pedestrian and to vehicle and to structure. This problem has not been reproduced or confirmed by dealer. This problem has not been inspected by manufacturer or police or insurance No warning lights prior to problem..

NHTSA ODI 11536450

When trying to brake while parking in a parking spot at low speeds, or so and go traffic my wife and I experience an extremely hard brake pedal that creeps to a stop, almost hitting others and structures.

NHTSA ODI 11509028

Brakes failed and became hard to press down on it and would not stop vehicle.

NHTSA ODI 11503873

I have a 2015 Chevrolet Suburban that had an issue with the brakes not wanting to stop the vehicle at slow speeds. Several times when we pulled into our garage or a parking space the vehicle would want to glide instead of stopping. I've had several parts replaced and am now hoping the problem is fixed. just picked the car up today from repair shop.

NHTSA ODI 11501508

Vehicle is very hard to stop there was a recall which was performed in 2019 and it’s coming back and doing the same thing it takes a lot of brake pedal pressure to stop the Vehicle. It started some time ago but now it’s getting very hard to stop the car

NHTSA ODI 11485640

Brakes became very hard to apply and the car could not stop quickly. Needed to replace the vacuum booster pump.

NHTSA ODI 11465925

The vehicle component of concern is the braking system. The brake pedal has to be pressed at an unusual rate of pressure to engage the brake system. More concerning is, on several occasions the brakes seem to fail, initiating the ABS system while in fast food lines. This has also occurred while backing up causing the pedal to be jammed to the floor to stop the vehicle. The excessive need for pressure while braking was supposed to be fixed in 2021 by a "simple" recall that simply updated the computer. I had this recall performed, but still have the same braking issues in my 2015 Chevrolet Suburban. I feel that this is a very serious concern and should be addressed. The difference is truly night and day between my wife's vehicle and mine. The braking issue comes with no warnings or alarms. I have had my brakes checked on several occasions to confirm normal brake wear and longevity.

NHTSA ODI 11455686

Brake pedal got hard and truck didn’t stop until brake pedal got softer, this been happened few occasions.

NHTSA ODI 11450087

After about 10 min idling vehicle, noticed “service brake assist” message. When it was time to pull out onto road, the vehicle did not brake as expected. I had to push much harder on brake pedal, and heard clicking noise. I was in front of the middle school and because the vehicle was going very slow I was able to stop, but could have had an accident if the speed was higher or if I wasn’t strong enough to push pedal harder. This happened today 2/25/2022 and the outside temp is 3F. This seems just like the recall n192268490 on the consumer reports website, but the dealer says this vehicle is not affected even though it is the same year and model name.

NHTSA ODI 11448878

I am the second owner of the I check my car recall then i took my car to the dealership in Saudi Arabia [XXX] Branch in first time they say we don't accept the recall then I complaint to [XXX] then they give me appointment after that they accept my car and tell me come after 2 hours when I go to take my car they say your car is ready but we need to confirm from GM before we handover the car even they did not provide me any vehicle for the transportation after all this when I bring my car back nothing has been fixed all warnings everything is same my VIN [XXX] Recall Number18V586 Recall Number19V761 Recall Number19V645 please fix problem and INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ODI 11446980

My wife drives a 2015 Chevrolet Suburban LTZ. The brake pedal would vibrate when pressed going at slow speed or when reversing for weeks leading up to the break failure; however, no service message would appear on the dashboard instrument panel. On December 17, 2021 my wife was driving when someone in another vehicle crossed the highway right in front of her, when she pressed the brakes, they were very hard to press and the 2015 Suburban was not able to stop. Fortunately, she barely missed colliding with the other vehicle. She was able to coast to a slow speed and pull over into the grass and glide to a stop because the brakes would not work. This was the first time that a "Service Brake Assist" message appeared on the dashboard instrument panel. We had the Suburban towed to the nearest Chevrolet dealership. In researching the problem, there has been a recall issued for this type of failure of the brakes for 2015-2018 Chevrolet Suburbans; however, there is no recall for our Suburban according to the VIN #. Failure of the braking system on a vehicle is very dangerous and can result in injury or death. I strongly believe our vehicle, and other vehicles like ours, should be added to the recall list as soon as possible before someone gets seriously injured or dies due to not being able to stop and crashing into another vehicle, person, or object. The Chevrolet dealership says that since our vehicle is not on the recall list, we are responsible for the charges to fix it; however, I believe that the manufacturer (Chevrolet) should pay for the expenses since this seems to be a defect of the parts that are failing, especially since the Suburban is only 6 years old and has less than 100,000 miles.

NHTSA ODI 11444683

The Service Trailer Brake System keeps popping up. Keeps dinging off and on whether you push the dismiss button or not. When this is on I question if the electrical brakes will work when I tow our camper. It is very distracting while driving. Safety Concern for sure!

NHTSA ODI 11444084

While vehicle is on if parked or driving the service trailer brake warning will come on and go off repeatedly. Happens randomly.

NHTSA ODI 11443655

The break vacuum pump is going out and making vehicle hard to stop and fuel pump or vacuum is leaking gas and smell inside vehicle

NHTSA ODI 11443462