Service Brakes Problems of Chevrolet Tahoe - part 2

Unknown but there was many lights on at the time of brake failure. I was driving home from florida to NJ with my four young children in the vehicle on a 65mph highway when all these lights came on, the brakes completely stopped working and it told me it was reducing speed to 62mph for safety because the brakes were failed. It also stated service svc. By the grace of god I was able to off-road it a bit to get it to slow down to a stop. The second time it happened was in my driveway parked. Inbetween the two incidents I brought my vehicle for regular service and asked them to look at the brakes again for me as this is a major safety concern as well as my transmission slipping and they complete refused and only changed my oil.

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The body control module does not work. A new bcm was installed in my car in April 2025. Since then I am having multiple issues, but the safety related issue is with the trailer braking system. It is available for inspection upon request. The dealership is unwilling to try another bcm without it costing me $600 for labor. If I am unable to use my brakes, then I put myself and others on the road at risk. The problem started with a tire monitor system. I was told I needed a bcm to fix the problem so the car would not throw codes. Now, I am being told the problems with the brakes are not comiing from the bcm. There was nothing wrong with my car until I took it to this dealership for a new key faub and a tire pressure monitor error. The body control module in a 2018 chevy Tahoe premier does play a role in controlling the sunroof. More specifically, the sunroof system is supplied power through a fuse located in the driver-side fuse box which is connected to the bcm. The sunroof switches communicate with the bcm via a serial data circuit, and the bcm then commands the sunroof to open or close. Therefore, the bcm acts a central hub in the electrical system of the vehicle and communicates with the sunroof control module to operate it. I learned this from two other dealerships. One dealership in west virginia and another dealership in texas told me this information about the bcm controlling the sunroof and many other electrical parts of the 2018 chevy Tahoe premier. To make it simple, the bcm was replaced. The vehicle is now having serious issues. I consider an unintended activation of the braking on the wheel which causes the vehicle to pull to one side puts me at risk of a crash. Is this yet another failed sensor or part due to the negligence of the service department at smith Buick when replacing the bcm and programming a key faub?.

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I purchased my 2019 Chevrolet Tahoe in April of 2019 with 4 miles on the dashboard. My vehicle is currently in the shop where I purchased the vehicle. It’s been there going on 3 weeks now. I was driving and my vehicle started losing power. I’m traveling on the highway at the time and my vehicle engine light came on as well and I couldn’t go over 30 without the vehicle losing power. I pulled over just in time before it shut down almost causing an accident . I have been servicing this vehicle 4 months after purchasing it. I’ve had better at a buy here pay here lot. And now I’m without a vehicle due to the liner needs replacing. I was told they had to drop the entire motor to do so. My vehicle has 80,000 + now and I definitely shouldn’t be replacing this component. There are other things going on as well but I’m unaware of the name. Also I purchased every warranty there was to buy when I purchased this vehicle and the dealership failed to acknowledge any one of them. So lucky I had another warranty company to bag me up and they are the ones paying this 4to 5,000 dollars repair. I’ve also had to service the trailer brake system several times. . Never used it since I’ve had the vehicle. . Until I asked them to just disconnect it because it wouldn’t stop. Also 4 months of having the very. . The custom rims ( back passenger side) broke from the inside almost causing me to go into ongoing traffic on the opposite side of the road. . And nearly flip. Meanwhile all this is coming out of my pocket to fix. . Except for this engine repair. . But I do pay the deductible. Many is telling me to get an attorney. But I reached out 1st since I seen where there is a recall but it’s not saying my year of vehicle. Please help. Also. I’m still receiving my oil changes from the dealership. And I get them on a regular. Note: the shop that has my vehicle is not the one listed on the document. But this is what the diagnostic read. And this is what’s being done to my vehicle.

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Breaks keep making noises and all four tires need to be forced balanced dealership won’t fix the issues.

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-malfunction---while driving, when I press the brakes to come to a stop, it seems as if the brakes catch but then releases and then catches again. As it releases, it continues to roll. Vehicle is availabe upon request. -safety risk--- because the brake releases and/or eventually not catch at all, this is unsafe because I can roll into traffic -reproduced and/or confirmed--- I have brought my vehicle to a service center to repair a recall and was told to that the issue should be resolved once the recall was complete. The issue was temporarily resolved for approximately one month or so, and now it is back to breaking and releasing. -one can only assume that the vehicle and/or its components have been inspected given that I brought the vehicle to the service center, stated the issue, and was told that the issue should be resolved after it has been serviced.  -there were no warning lamps, messages, or other symptoms of the problem prior to this issue.

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Brake vacuum pump.

I went to reverse and my brakes didn’t work, the error then came on dash “break system failure max speed 43 mph” I then had to drift into a parking lot to wait for my car to stop. Car dealership said they can’t find anything wrong, I have images showing the error.

My truck keeps shutting off and steering locks up.

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On a few occasions the emergency / parking brake auto releases when parked on a slight incline while the engine is running and transmission is in park.

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I am reporting a critical safety design defect in my 2025 Chevrolet Tahoe z71 (VIN: [xxx] ), involving the brake pedal assembly geometry. Bought vehicle in January this year and within a few days of driving I noticed my foot repeatedly catching or hanging up on the brake pedal when moving from the accelerator to brake, which severely delays braking application (regardless of my footwear). This momentary obstruction creates an imminent risk of collision during sudden stops. This happens at least once a week when commuting to work. The component malfunctioning is the fixed brake pedal placement itself. No warning lamps or symptoms precede the issue; it is a physical interference defect. The problem was reported to courtesy Chevrolet in phoenix, arizona on 10/02/2025 (service r. O. 694801). The service advisor verbally acknowledged the issue but stated it was a "factory design issue" they could not fix, explicitly referring me to gm for resolution. Other than myself and the dealership, no one else has inspected this issue. The pedals are available for inspection. The attached photos provide supporting evidence. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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While driving, without warning my brake system failed and vehicle did not stop when I applied my foot on the breaks. In addition to while driving up a steep incline the engine failed as I was actively applying my foot to the gas pedal causing vehicle to roll backwards. Most importantly I do not feel confident using this vehicle any further knowing that the brakes are not operating as they should, risking my life and my children’s life is nonnegotiable. Someone help please.

My car lost its brakes on [xxx] last December, putting my life and my husband's life in the vehicle at great risk, at that time the vehicle was only 9 months old, after the event the car was taken to the Chevrolet bay dealer in estero, FL, where I bought it with zero miles just a few months ago, it was taken to the dealer to solve the brake problem and the service that corresponded to it, oil change and maintenance by miles, the brake problem was reflected in the Chevrolet application, the dealer offered a supposed repair to the car (December 12, 2024, to December 14, 2024) I have documents that prove that the dealer assured us that the problem had been resolved, that the supposed service was given, but last Thursday, [xxx], just one month after the first accident, the car lost its brakes again on [xxx] at the exit [xxx], causing me to have to drive without brakes, run red lights due to the impossibility of stopping the vehicle, putting my life at risk for the second time. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Vacuum pump and vacuum pump belt replacement. Experiencing increased brake pedal effort, hard brake pedal, and increased stopping distance. Confirmed by an auto shop and mechanic that this is the issue. There was special coverage given by general motors to this vehicle to address this issue that expired in November (but I did not know that this existed). The vehicle has not yet hit 150,000 miles. Request to have my Tahoe special coverage warranty extended to address this issue.

On January 21, 2025 while  with my family in -15 degrees, the vehicle suddenly went into abs lock. We were completely immobilized and unable to move the vehicle. The following warning lights illuminated on the dashboard:antilock braking system errorservice steering column lockservice traction controlbrake system failure 43 mph top speed. The vehicle was effectively locked, preventing us from driving or even reversing. This left me and my family stranded in a potentially hazardous situation with the freezing temperatures.  .

On one morning w/20 something temperature, Tahoe started and immediately shut down. When restarted, multiple malfunction lights were lit: engine, abs/brake, steering column, traction control, etc. Reached onstar for advice to see if Tahoe was drive-able, but only got confirmation of system malfunctions and offered roadside assistance but declined since at home and would call back if needed. About an hour later and several restarts, all malfunction lights finally cleared except engine light, which stayed on for another day or so. Tahoe drove okay during engine light on.

Service trailer brake system message is appearing.

I bought my Tahoe from dan vaden Chevrolet in savannah, GA with approx 58k miles. At around 88k miles I noticed the transmission hesitated when putting into reverse or drive from the park position. I had my transmission fluid changed at 70k and 100k miles. Now, at 112k miles, it has significantly gotten worse with shuddering between gears 1-3 and jerking when in reverse. Major hesitation when accelerating at any speed and high pitched whining noises that randomly happen, even after putting it in park and turning it off. Also, my abs and stabilitrak lights will illuminate and then go off every few days. As well as another random icon that randomly comes and goes. This Tahoe is now unsafe to drive but it’s the only transportation I have. I already missed a radiator replacement recall by 1,500 miles and had to pay for that out of pocket. Now Chevrolet isn’t recalling this transmission when it has over 190 complaints on this website alone, and thousands of others on other online forums. What will it take for the manufacturer to do the right thing? will someone have to die in order for this to become an issue they stop ignoring? we have all spent money we worked hard to earn and deserve a vehicle that’s safe for our families.

1-*: pressure control solenoid valve 3 - stuck off - diagnostic code# p0796 (5/5) permanent 2-*: yes, the cars rear brakes suddenly locked and veered the car off the road. Check engine light came on and the car had trouble driving up my driveway. There was a burning smell coming from the front engine. 3*: unknown - confrimed with a mobile mechanic - I have a photo of the diagnostic code. Diagnostic code# p0796 (5/5) permanent - pressure control solenoid valve 3 - stuck off 4*: yes, inspected by a mobile mechanic. Diagnostic code# p0796 (5/5) permanent -pressure control solenoid valve 3 - stuck off 5*: check engine light appeared after the rear brakes locked up. After the check engine light appeared; minutes later the car had extreme trouble driving up my driveway. There was a burning smell coming from the front engine.

Driving down the freeway at 75 mph and the headlight started flickering any time I would use my blinker. 5 minutes later the car automatically breaks hard all by itself along with the dash lights going off and the doors locking and unlocking. 3 days later driving in town taking a hard left suddenly I get alerts on the dashboard saying, "parking assist off" and "stabilitrak" then suddenly my steering wheel jerks violently all the way to the right. This happened 2x when I am driving!!! it is available for inspection upon request. If this steering wheel malfunction happens to someone driving down an interstate someone could die. It just happened yesterday so I have not gotten it in to be looked at yet. There was zero warning it all happens suddenly and out of nowhere.

Vehicle brake module system failed after being replaced one week ago. All of my systems system lights are coming on on my dashboard. I cannot drive past 62 mph. This is the second time that this has happened under a month after vehicle being serviced at a gm dealership.

The contact owns a 2017 Chevrolet Tahoe. The contact stated that occasionally while driving at various speeds, the vehicle failed to accelerate as intended while the accelerator pedal was depressed, and the rpm was elevated. In addition, the contact stated that the vehicle would brake independently while the accelerator pedal was depressed. The check engine and electronic stability control warning lights would occasionally illuminate. The contact stated that restarting the vehicle was a temporary repair; however, the failure persisted. The contact stated that the windshield wipers activated independently, and all four doors locked independently. The vehicle was taken to a local dealer where it was diagnosed with a fuel injector #6 failure; however, the part was replaced approximately one month prior to the failure reoccurring. The vehicle was not repaired due to the cost. The contact related the failure to NHTSA campaign number: 19v761000 (service brakes, hydraulic, service brakes, electronic stability control (esc); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 95,000.

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1st incident- engine had a bad lifter and cam shaft with 46,000miles. When this happened I was going through a railroad crossing, if the failure was bad enough and locked the engine up I would have been stuck on the tracks with my family. This issue could cause the motor to lock up if the lifter or cam shaft had a more serious failure. Dealer confirmed the lifter and cam shaft were bad and replaced. The engine had a vibration 2 weeks before the failure but the dealership could not identify or duplicate the issue. Vehicle was in the shop for 35 days to repair. 2nd incident- parking brake and brake system locked up and would not release until the vehicle was reset. Scheduled vehicle to be towed in and the brakes locked up again while loading the vehicle to tow. Dealer is still troubleshooting the issue after 5 days. Errors on screen "forward collision system unavailable, brake system failure 43mph top speed, service steering column lock, service traction control, service esc, service brake pad monitor" if this happened while on the highway it had the chance to cause a serious wreck.

The vacuum pump has failed once again and it was repaired via a recall in 2019.

While driving at low speeds, I am experiencing difficulty with braking. The brake becomes very hard to press down and it takes me longer to stop. I researched this and came across a recall for a vacuum pump issue. I believe this is exactly what is wrong with my vehicle. However, when I input my VIN into the recall website, it says my vehicle is not included in the recall. How can I get this issue covered without having to pay out of pocket (we were quoted over $700). I fear that I may cause an accident if I am unable to stop.

Driving on highway at 65mph truck suddenly locks up (brakes or shifts into park) and does not release. Vehicle swerves while coming to stop. Occurred 2 times sent to dealership and could not duplicate issue. 3 weeks later same thing happened both incidences happened while having cruise control on.

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The brake vacuum pump is bad. It was hooked up to solious and that's the codes it's throwing. Out of no where while driving on the highway my brake pedal became very stiff and difficult to push down. I could barely stop in time off the exit. Now when the truck is in drive it doesn't even move. When you do go u have to put all your might into pressing the brake down to stop. Even then the pedal won't go down. Very dangerous especially since I had my [xxx] daughter with me. Very scary situation. I looked up recall for VIN but I have 0. Which is weird because there's a recall on 2016 chevy Tahoes for this exact symptoms and part. Now I did go to [xxx] and found a recall under my VIN and also a warranty for this part under my VIN. Why doesn't it list a recall for me information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I called my local Chevrolet dealership to get the recalled on my Tahoe fixed and they can’t fix the recall for a full month. I’m very concerned because it’s a recall on the vacuum pump so it affects my brakes. My truck is a daily driver so I will have to gamble for a month on the streets and pray the brakes don’t get any worse.

While my wife was driving her car going down a slope, her brake pedal fell to the floor loosing brakes and would not return to normal position for a few minutes. I took the vehicle into the dealership over two weeks ago and they have not been able to re-create the situation that took place while my wife was driving the car and still have not returned the vehicle. My concern is that my wife will not feel comfortable driving the car with our toddler and new born if there is no actual repair.

Increased breaking effort, vehicle didn’t and currently doesn’t allow me to stop as quickly as needed aligns with recall number: 19v645000.

The contact owns a 2018 Chevrolet Tahoe. The contact stated while driving at an undisclosed speed, the brake pedal was depressed with the brake warning light illuminated. The vehicle was able to restart; however, the failure recurred. The vehicle was taken to the dealer where it was diagnosed that the vacuum pump had failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 92,104.

Brakes system failure message on highway and couldn’t use brakes without standing on them. Once came to a stop in breakdown lane tow driver took us to closest Chevrolet dealer where we were told our vehicle was unsafe to drive and was basically a toboggan. If we weren’t in slow moving traffic we would’ve been in a serious accident. Dealer confirmed by running computer on car that the brake system motor stopped working and lost communication with power steering, transmission, central gateway, brake system control, and engine control. Waiting to see if this is a software issue or if brake motor needs to be replaced. Either way feels very unsafe to drive.

Brakes failed pedal went to the floor when getting off the interstate. Kept pressing pedal and came back but vehicle pulls to the left hard when brake pedal is also very hard to press. Very unsafe afraid to drive the vehicle. Dealer has recalls for same model vehicle show under my VIN . Vehicle is available for inspection at anytime.

I was driving with family (2 adults - including myself, and 5 kids - ages [xxx] ) the truck started to flash warnings and my brakes disabled. We couldn't stop and almost had an accident. I kept pumping the brakes and the e break I didn't give it any gas and we slowly came to a stop after some time. I shut the truck off as I was beyond terrified and tried to start it back up. The lights came on but it didn't turn over to start. Had to have it towed and find an uber for a 7 passenger car. The truck was towed to the nearest dealer (a little over an hour from my home) and I was told it was a battery issue. They replaced the battery didn't check the breaks and told me if the battery dies the breaks stop working. Yet, I had power in the truck just no brakes, when I tried to turn it on the lights went on as did the radio but that was it. I tried to take pictures of the warnings on the dash however we were in mom panic mode. Chevy is acting as if this isn't an issue. I had to put out over $1,100 between the battery, the fees of the dealership, rental and an uber. If we were going at a higher speed we would have not been okay. It was beyond dangerous and the thought that if a battery suddenly dies you have no breaks, that is just unacceptable. I would love for someone to look into this. I am now looking to see what I can do as I don't feel safe in the truck. I don't want this to happen to anyone else hence why I am asking for someone to please look into this. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Brakes shutter in reverse. Sometimes don’t work when backing out. Almost as if brakes go limp or no connection.

Keeps saying service trailer brake system and does not stop ringing in the dashboard it’s very distracting while driving .