GMC Sierra 3500 brake failure problems

Filed Jul 9, 2026 · Brakes · 58,000 miles · FL

The contact owns a 2024 GMC Sierra 3500. The contact stated that while driving at an undisclosed speed, the front and rear brake caliper hoses collapsed. The failure caused a complete loss of braking ability. No warning lights illuminated. The vehicle was taken to a dealer where it was diagnosed that a brake hose failure caused the brake caliper hoses to collapse, impacting the brake caliper pistons. The manufacturer was made aware of the failure. The failure mileage was approximately 58,000.

Filed Nov 1, 2024 · Electrical · 31,308 miles · CA

The contact owns a 2022 GMC Sierra 3500. The contact stated while the vehicle was parked, the trailer plug was connected, and electrical fuses popped. The contact stated that all the fuses were blown. In addition, the contact stated while driving the vehicle, the trailer brakes failed to function as intended. The contact stated that the trailer brakes went off and on. The vehicle was taken to the dealer where it was diagnosed with trailer brake control module failure. The contact was informed that the trailer brake control module needed to be replaced. The vehicle was repaired. The contact referenced an unknown recall; however, the VIN was not included in the recall. Additionally, the contact stated that the failure had previously occurred, and an unknown part was replaced; however, the failure reoccurred. The manufacturer was not made aware of the failure. The failure mileage was approximately 31,308.

Filed Apr 19, 2024 · Brakes · ID

When starting the vehicle, I got a message to service the parking brake (this is the second time I’ve had this warning appear in the 21,000 miles I’ve owned it, first was approximately 5,000 miles ago). When this warning is active the parking brake does not engage, and can’t be used to stop the vehicle when the brakes fail as they did today. With 42,774 miles on the vehicle, and the onboard monitor for brake wear showing remaining brake life at 94% front and 96% rear, brake fluid reservoir between Max and Min the brake pedal went soft and the vehicle would not stop. I resorted to putting the vehicle in neutral and pumping the brakes until the pedal got hard. As soon as I let off the brake my vehicle began to roll backwards, stepped on the brake pedal again and the pedal again went to the floor without stopping or slowing the vehicle (pumping the brakes got it stopped again inches away from running into my house). The myGMC app notified me that I need to service the ABS system. I had the vehicle towed to the dealership for diagnostics and repair. Possibly related, this afternoon before the brakes stopped working I felt a mild vibration when traveling 20-35mph that resembled the vibration that occurs when a wheel bearing has begun to fail. Tow truck driver witnessed the vehicles inability to stop when putting it in neutral to load vehicle. It is unimaginable that a vehicle can be placed on the highway that has no backup system in the event of brake failure. Had a kid run out in front of me there would have been no way to avoid the accident (no other warnings appeared to indicate the vehicle was unsafe to drive. Brakes worked correctly and stopped appropriately until they didn’t).

Filed Mar 28, 2022 · Brakes · DE

The contact owns a 2018 GMC Sierra 3500. The contact stated after driving on a long downhill road at an undisclosed speed with his 2017 Highland Ridge 349 RV hooked to the vehicle, as he was reaching a leveling point and depressing the brake pedal to slow the vehicle, the brakes failed to operate as needed. The contact stated that as he depressed the brake pedal further, the brake pedal overheated and would no longer respond properly. The contact stated that the vehicle was rated at 22,000-23,000 while the trailer was 14,300 pounds loaded maximum. The contact stated that the trailer currently weighed 11,000 pounds. There were no warning lights illuminated. The contact stated that the failure had been reoccurring while driving. The vehicle was taken to the dealer who informed the contact that the braking system was operating properly. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed May 26, 2021 · Brakes, Electrical · TX

The computer lights up dash reducing power and taking the trailer brakes away. This almost caused a wreck when the truck shut off and the brakes failed. This truck has been in the shop at least once per month trying to fix the issues, from computer and brake failure to injector failure. Glenn Polk Chevrolet in Sanger has been working on this since the truck was new. Also we have case open with General Motors without resolution. The dash lights up at the same time as the brakes fail.

Filed Mar 5, 2021 · Brakes · 68,000 miles · LA · crash · 1 injury

Tl* the contact owns a 2014 gmc sierra 3500. The contact stated while driving at 35 MPH, the brakes failed causing the front driver side of the vehicle to crash into a sign. The contact was able to drive the vehicle back home. The contact suffered some leg soreness. A police report was filed. The contact stated no warning light was illuminated. The vehicle was taken to ryan automotive group (1101 oliver rd, monroe, la 71201) where the body damage was repaired however, the failure cause was not diagnosed. The contact then received recall notification a few months later for the federal safety agency campaign number: 19v645000 (service brakes, hydraulic) and which the contact believed was related to his failure. The manufacturer had been informed of the failure and informed the contact that they could not reimburse the vehicle damage to the vehicle. The failure mileage was approximately 68,000.

Filed Apr 3, 2015 · Brakes · 46,000 miles · MD

Tl* the contact owns a 2005 gmc sierra 3500. While driving at approximately 40 MPH, the brakes failed when the brake pedal was depressed. The contact lost control of the vehicle and the service braking system warning indicator illuminated. After inspecting the vehicle, the contact observed that the brake line was rusted. The vehicle was towed to the contact's residence. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 46,000.

Filed Nov 7, 2014 · Brakes · 75,000 miles · VA · crash

Brake line ruptured leading to complete loss of braking. Hit car in front of me as it came to a stop. This is the second time that the brakes have failed due to brake line rupture due to excessive corrosion of the brake line metal. Please force gm to issue a recall.

Filed Aug 11, 2014 · Brakes · 34,000 miles · MD

Stopping in driveway. Brake pedal went to the floor without resistance. After vehicle stopped observed fluid leak under front driver side aft of front tire. Inspected engine compartment and observed severely corroded brake lives and brake fluid in engine compartment. Brake line apparently corroded and ruptured resulting in brake failure.

Filed Mar 19, 2014 · Brakes · 131,883 miles · WV

I was traveling on the interstate towing a 5th wheel trailer and traffic came to an abrupt stop. I applied my brakes and had brakes than the pedal went to the floor and I lost braking power. I let off the brakes and reapplied the brakes and the pedal went to the floor with low breaking affect. I pulled the truck over and found brake fluid coming out from above the gas tank. I carefully took the truck off at the next exit using my trailer brakes to stop the vehicle. I took the truck to the first service station that I saw and had them look at it. They found that the rear brake line had corroded at a clip above the frame rail above the gas tank and advised me that they would have to replace the rear brake line. Unfortunately I was stuck away from my tools and service shops that I use and was stuck being gouged by the service center that I was able to get to for a repair. After I returned home from vacation I questioned the mgt of the service center about the bill. They checked with the local dealer about the hours for the repair and the local dealer advised them that they see this all the time on this vehicle. I looked for a recall on this and found none. I contacted gm about this as just about everyone that I talk to about this problem has all seen it. Gm advised me that it was an isolated problem and that they could not help with the repair since the truck was 9 years old. I advised them that this is a common problem and they deny it but they did offer me $2000 towards a new gm vehicle. I advised them that was not what I was after as I do not need a new vehicle nor want an new vehicle. What I did ask for was 50% of what the repair was as it was a 9 year old truck and they refused. They will not even put the refusal in writing. This needs to be a recall before this problem kills someone as it is a common problem. I seen an investigation to 03 but mine is 04 with same.