Service Brakes Problems of GMC Sierra 1500 - part 2

I was traveling north on interstate 95 and approaching my exit ramp. I was initially in the inside lane of travel. I accelerated to merge into the outside lane, between two other vehicles, and then onto the exit ramp. Once on the exit ramp, I let off of the throttle and the engine suddenly shut down. I noticed a message on driver information center instructing me to shift the vehicle into neutral and press "start again". The engine had shut down without any warning whatsoever. I complied with the instructions to no avail. The truck is over half full of fuel. I was within an hour of home after completing an approximately 8 hour, 500 mile, round trip over 2 days of driving. After this event, I connected an obd2 scanner and the only code found was p25a2 brake system control module. I placed the truck in park and tried repeatedly to start the engine. It would not turn over, crank or start. I had power to all systems and no other codes. I had to have the truck towed from the scene. The truck's performance had previously been flawless during this entire trip and had given me no warning whatsoever of the sudden engine shutdown. This is extremely dangerous and a safety concern.

See all problems of the 2019 GMC Sierra 1500 🔎.

Vehicle shifting poorly, and I have had a bunch of brake and rotor issues.

See all problems of the 2020 GMC Sierra 1500 🔎.

The contact owns a 2018 GMC Sierra 1500. The contact stated that while depressing the brake pedal, the brake pedal displayed more resistance than expected, causing the contact to have to apply more pressure while depressing the brake pedal. The contact stated that the braking distance was extended due to the failure. The vehicle was taken to the dealer who diagnosed that the brake vacuum pump had failed and needed to be replaced. The vehicle was not repaired. The contact became aware of NHTSA campaign number: 19v645000 (service brakes, hydraulic); however, the VIN was not included. The manufacturer was informed of the failure and confirmed that the VIN was not included in the recall. The manufacturer referred the contact to the NHTSA hotline to report the failure. The failure mileage was approximately 75,000.

See all problems of the 2018 GMC Sierra 1500 🔎.

-transmission valve body failure, wheel lock up, abs event, loud bang and a flashing "d" on driver information center (dic) when lightly or moderately accelerating forcing an 8-7 or 8-6 downshift -when all four tires lock up at a high rate of speed, this puts the driver, the passengers, and all others on the road at risk for injury or death. -yes, the problem has been found in a document by my local dealer that this issue was added to my exact vehicle's service manual on 11/27/24. The document describes in detail the exact scenario I have been involved in multiple times. It is deemed as #21-na-275. It locks up the tires randomly to the vehicle in mid acceleration at any speed including 80 miles per hour in one instance for me. -yes, the dealership inspected it and found the issue to correlate with the newly added section to the service manual, 13333166. This document id is 5925530 and the added information to the dealership is #21-na-275. The GMC manufacturer has been contacted as of 3pm mst 3/14/25. Insurance doesn't deal with mechanical problems. The police will only be involved when there is death or injury. -no. The only warning that happens is simultaneously as the vehicle locks up the tires causing the driver (me) to inevitably try to save myself and others, swerving and trying to focus on not hurting myself or others but I did notice the "d" flash on one of these occasions. This is the most dangerous issue with a vehicle I have ever even considered. At any time, for any reason, all four tires can lock up at any rate of speed and cause multiple casualties. The way to fix this is to spend $3,000 which I am sure many people like myself do not have. This means there are thousands of these exact make and models of vehicles on the road right now. Please do not take this lightly as I have almost crashed multiple times with people in my vehicle due to no fault of my own.

Vehicle was having trouble accelerating, like the parking brake was on. Then received a message that the brake system failed, lane assist failed, and I couldn’t drive faster than 43 mph. Then a message about the trailer brake appeared.

Upon applying brake pedal at low speeds the brake is hard to depress and "choppy" in reacting. This seems same as n192268490 increased brake pedal effort yet the GMC denali is not apparently in the recall. This has happened on several occassions.

See all problems of the 2015 GMC Sierra 1500 🔎.

On a normal trip to work the dash light lit up then gave me these warnings. Service esc, service trailer brake, brake system failure-62 mph top speed, steering assist reduced. Dashboard lights that were on, abs check engine, brake, traction control. When I tried to slow down the power assist was gone on the brakes, I had a little braking when I pushed the pedal all the way to the floor as hard as I could, when I went to turn the wheel was hard to turn. I have had no issues like this before. After I managed to stop and turn off then on the vehicle everything came back expect for a warning to service the trailer brakes and the check engine light was still on. It all cleared after a few more restarts. I got the truck to the dealer 4 days later and they said it was the battery going bad even though I was not having any problem starting the vehicle, I had them replace the battery. I am unsure if the problem is resolved, time will tell. What I am sure of is if my daughter had been driving the truck, she would not have had the strength to get the brakes to work or turn the wheel, she would have had a accident for sure.

The vehicle has no power assist when at low rpms and is a hazard that may cause an accident.

See all problems of the 2017 GMC Sierra 1500 🔎.

Brake monitor repair keeps illuminating since 2/1/2025! replaced all brakes and rotors, yesterday 4/27/2025. Now don't drive over 43 mph illuminates, emergency brake illuminates says push brake peddle to disengage parking brake yet parking brake has never been engaged.

The system that failed was the wire harness for the internal brake control. This is a well documented problem on youtube and reddit. I was driving home from the mountains, with my 7k lb camper, and I started receiving incessant messages alternating between "trailer brakes disconnected" and "trailer brakes connected". The messages made it impossible to see the speedometer and hear music or calls. Most importantly, I lost my trailer brakes in the mountains of north carolina. Meaning the only way I could slow down was with my truck brakes, while a 7,000 lb camper was pushing me. I took my truck to the dealership today and paid $166 for a diagnostic. The stated the issue was with my camper. I tried to explain that many owners were having this problem and it is well documented. They stated there was no recall on my vehicle and gave me a print out of what to check on my camper. I checked my camper and there are no issues and no issues when I connect it to my other vehicle.

See all problems of the 2022 GMC Sierra 1500 🔎.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving approximately 20 mph, the vehicle came to a screeching stop. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed that the electronic brake control module had short-circuited and there was a miscommunication, which engaged the parking brake and locked up the rear wheels. The vehicle was not repaired. The vehicle was previously taken to the same dealer on two occasions and repaired under NHTSA campaign number: 19v889000 (service brakes, hydraulic, service brakes, electronic stability control (esc); however, the failure recurred. The manufacturer was contacted and opened a case, but no additional assistance was provided. The failure mileage was approximately 7,000.

I purchased my 2022 GMC sierra XLT in February of 2022. I have had it in the shop 4 times for recalls. They couldn’t or didn't put an inspection sticker on the truck because I honestly don’t think it could have passed inspection. The truck sounds like a truck on transformer when I turn it off breaking town like a robot. On yesterday which was 1/27/2025 while backing up to turn around the truck started dragging in the back like the breaks locking up, the same thing happened while turning into my driveway off a state highway with an 18 wheeler coming. GMC can’t look at the truck until February 10! this truck was purchased new and it’s been nothing but trouble. Electrical system goes in and out steering assist reduced drive with care, engine power reduced, park assist on then off and truck making unusual noise. I waited 13 years to finally get another brand new vehicle and this what I ended up with. My last new vehicle was a 2004 Honda pilot. I had 459,000 miles on the truck no engine or transmission issues. I donated the truck to goodwill. Therefore, I hope GMC understands my frustration when my daughter’s 2019 kia optima is out performing my 2022 GMC XLT truck. The back breaks are dragging and locking up, it appears the gears are getting stuck and I can’t back the truck up or go in reverse without the struck staying stuck, then jerking vigorously and problems with the wheel turning to the right the truck get stuck or stall!.

We have had several times where we are on highway and our truck like slams on the brakes causing us to lose control. It was a recall on it and GMC fixed it and within the same week of them fixing it it happened 3 times back to back. Making my truck to force another car to steer out of my way and actually went off the highway. Thank god it was just dirt snd he didn’t get hurt or anything. But I am scared to even drive my vehicle! it starting happening for about a year now. And it would only do it like every couple months but now it’s has done it 6 times in the last 2 months!.

See all problems of the 2021 GMC Sierra 1500 🔎.

Brakes at low speed do not work well, causing extended braking distance. Looks to be a previous vacuum brake pump issue, but is no recall on it now.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving on the highway at 75 mph, all of the warning lights on the instrument panel had illuminated, the contact depressed the brakes and the vehicle would not brake in a panic the contact quickly steered into the left lane, pumped the brakes frantically, and the vehicle was finally able to come to a stop. The vehicle was taken to a local dealer where the vehicle was diagnosed, the contact was advised that the failure experienced was due to a faulty battery and that it would need to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage 28,550.

See all problems of the 2023 GMC Sierra 1500 🔎.

"NHTSA campaign: 19v645000 as the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash. " our vehicle was serviced and repaired for this problem under the recall on 9/6/2019, however, it is now happening again. Is there a second recall for this problem, and/or what can be done to remedy the defective equipment?.

The contact owns a 2014 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. No warning lights were illuminated. The contact stated that the brake pedal was depressed to the floorboard. The failure also persisted while driving downhill. The vehicle was taken to an independent mechanic. The contact was provided information for NHTSA campaign number: 19v645000 (service brakes, hydraulic). The vehicle was taken to the dealer; however, the vehicle was not diagnosed or repaired. The contact was informed that the manufacturer had closed the warranty, because the vehicle exceeded 100,000 miles. The manufacturer was not made aware of the failure. The failure mileage was approximately 156,000.

See all problems of the 2014 GMC Sierra 1500 🔎.

This vehicle has the same issue as other recalled GMC sierra vehicles - the brake booster pump is failing, causing braking difficulty, particularly at low rpm and after repeated presses of the brake pedal.

While driving on the highway a message came up stating brake system failure, top speed 62 mph. It also came up with other error messages, like service traction control. I completely lost any braking capability and had to let it slow down & pull off to the side of the highway. I shutoff the vehicle and then restarted it & everything seemed fine. I took it to the dealership right away, where they said it had about 20 communication codes across different systems. After 3 days of them having it, they have no idea what is going on. They are now test driving my truck to see if they can get it to happen again (which could kill someone if it does happen again).

I was backing my boat down the ramp and the brakes were giving out. I know this was a recall issue, in the past, that I had repaired. Clearly, they repaired it with the same faulty part because it has happened again. When I took it to be repaired they said I had to pay for it this time. The issue wasn't resolved but only deferred until later, with a temporary fix. I could have ended up in the river and drowned. Paying the dealership to fix a safety issue caused by their defective parts is ridiculous.

I've had problems with the brakes for several years, the pedal is very hard at low speed. I've seen a recall but not on my car???.

Intermittently with slow driving such as parking maneuvers or creeping slow traffic at stop lights the brake pedal becomes very soft and depresses much more than normal and the brake action is decreased. Sometimes with this soft pedal it sounds like abs is engaging. Pumping pedal sometimes restores brake performance.

My pickup was specifically purchased to pull a duel axle trailer ( brakes required by FL. Law). The trailer weights more than the pick up. They stopped working with the electric /hydrolic trailer brake system. I have had the sierra in three times for warren ty repair. They never fixed the system. I have thoroughly test the trailer system - it works fine with another pickup. Dealer won’t return my calls. Multiple trips taking it in for this problem. Have a case filed with gm. All just placating me, now ignoring my problem. I am stuck and they are not acting in good faith.

The affected vehicle is a 2017 GMC Sierra 1500 4x4 crew cab truck with less than 34k miles. While driving the vehicle today the brakes became very hard, like a loss of power brakes. Felt like there was a loss of vacumn. At slow speed in reverse the brakes "shuddered" when applied. Have not taken it to a dealer as it just happened while traveling. Cheched for information for symptoms online and found gm had initiated a recall for this issue so I checked the nhts web site to see it my vehicle had a recall. System indicated 0 unrepaired recalls for my vehicle. So wanted to report the issue.

The contact owns a 2023 GMC Sierra 1500. The contact stated upon attempting to start the vehicle remotely, the lights illuminated; however, the engine failed to turn over. The contact stated that upon pressing the push to start button, the message "service braking system" and other braking system messages, and message that the "top speed 43 mph" were displayed. The check engine warning light was illuminated. Additionally, the contact stated that the vehicle experienced reduced braking while driving at various speeds. The vehicle was taken to the dealer where an unknown software update was performed; however, the failure recurred. The contact stated that the failure occurred intermittently. The vehicle was taken back to the dealer, where a service representative scanned the vehicle and informed the contact that diagnostic trouble codes were retrieved; however, the dealer later informed the contact that the failure could not be replicated. The contact used a scanner to scan the vehicle and retrieved diagnostic trouble codes. The manufacturer was notified of the failure and a case was opened. The manufacturer later informed the contact that they could not assist because the dealer stated that the failure could not be replicated. The failure mileage was unknown.

I noticed there was an issue regarding the break assist system in my vehicle a few months ago when I went to go for a drive. It is available to be inspected. The issue regarding safety revolves around the difficulty to break. The low amount of brake availability is dangerous in the case of a situation that if I needed to break quickly it is extremely difficult to. I have not had a certified individual confirm the issue at this time. It has not been inspected. The warning message "break assist" comes up every time I try to utilize the brakes. I know there are previous recalls, although when I have tried to see if my truck falls under those recalls it does not.

I towed a trailer last month and noticed some hard breaking issues in slow moving traffic. Las night as I was parking my vehicle under the car port, I had to press on the brakes to straighten my vehicle and as I was moving forwards slowly, my brakes failed, the pedal was stiff and I almost hit my other vehicle and the garage door.

See all problems of the 2016 GMC Sierra 1500 🔎.

The contact owns a 2018 GMC Sierra 1500. The contact stated that while her husband was inside the parked vehicle, the abs warning light illuminated. The contact researched the failure and was made aware of NHTSA campaign number: 00v055000 (service brakes, hydraulic); however, the VIN was not included. The vehicle was taken to a dealer where it was diagnosed that the abs control module had experienced a failure; and the abs control module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 112,000.

Truck showed check engine light and popup message to service esc, vehicle disable traction control. Before being able to have the vehicle scanned for error codes (after sitting parked turned off for a while, all errors cleared. Several days later when turning vehicle on traction control warning light, parking break warning light, and stability control warning light all turned on, service esc message popped up again, prndl position indicator light turned off and vehicle began to have a clicking noise in the steering column when break was pressed. There is a multiple year long thread on this topic on the silveradosierra forum entitled "service-esc-and-service-power-steering" it appears that dealer and gm help are limited and the issue often goes away and recurs.

I received a notice of a recall for a known problem with GMC transmissions. It is very well known that these transmissions lock up and cause problems with braking and can cause the vehicle to slide off the road when the tires lock up. It also causes hard shifting, which I have experienced. GMC said they will not fix the transmission, they instead will add a device to monitor the transmission, so when the transmission locks up and causes an accident, it will let me know that it was the transmissions fault!!! how is this legal? they will let me know that their transmission caused the accident after the fact? why not fix it? typical of government to do nothing about safety. . . And instead make laws that allow big corporations and government to make money off of peoples deaths!.

The brakes sometimes lock up after use, or don’t disengage ( on one side) and the truck swerves ( steering wheel turns to the right ) into the next lane. I have to over correct and you can hear the brakes squeal. I will have to get off the freeway or the road. I am on trying to track off a couple of times for 5 to 10 minutes until it stops doing it. It does it on average once to twice a day. Was told could be brake calipers hoses, speed sensors sending the wrong information to the abs system. It is very dangerous to drive the truck on the freeway doing 75 miles an hour!.

Driving at low speed such at in drive thru or parking lot if you press brake couple repetitive times pedal gets hard and you have to press really hard to stop it’s like vacumn assist losses vacumn in braking assist been happening last couple years but I’ve learned to adjust my braking at low speed to adapt.

The contact owns a 2020 GMC Sierra 1500. The contact stated that on several occasions while the vehicle was started, the check engine, brake system, and another unknown warning light illuminated. Additionally, the messages brake system failure, steering wheel failure, low oil, and two other unknown messages were displayed. The contact also stated that the rear-view camera remained displayed while shifted into drive, and the instrument panel failed to operate as intended. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 65,000.

Stopping at a stop sign with several cars in front of me my vehicle wouldn’t stop, luckily the car in front of me moved. I immediately called the dealership to have my vehicle repaired. They confirmed my brakes had a problem including the vacuum pump having an internal failure. They replaced vacuum pump and required belts then charged me $800. 00 for this service.

My brakes failed 2 times. One time I almost got into a horrible wreck with my daughter in the truck. "brake system failure" " max speed 43mph" I have not had any brake work or anything done. The dealer is trying to charge me to replace the whole brake system when [xxx] this says to reprogram. Still waiting on GMC to tell me if it's covered under warranty. From my own research this has been a major problem for hundreds of people if not more. I could have died because of a faulty brake system or a bad software update. I need help with this and so do the countless other 2020 gm owners. There is a recall on the 2019 for the exact problem but not the 2020s. Gm safety recall n192268090 please advise information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).