System/Component: Service Brakes, Hydraulic Summary: Recurrent loss of brake performance and vibration in a 2024 GMC Sierra 1500. Front pads wear to 1-?"2-??mm and front rotors become -??very warped-?? within short mileage intervals; right-?'front caliper previously seized; pad-?'sensor circuit fault also documented. Multiple dealer repairs under 30k miles; condition recurs. Increased stopping distance and steering vibration at speed. Chronology (dates / approx. mileage): 09/06/2024 (~10,437): front brake repair; 01/13-?"14/2025 (~16,239): RF caliper seized repaired; 05/05-?"06/2025 (~20,734): pads 1-?"2-??mm and rotors very warped; 08/15-?"18/2025 (~27,574): pads again ~2-??mm and rotors very warped. ( Emissions soot collection and engine deceleration is another issue in the diagnostics.) Dealer: Chevrolet Buick GMC of Bellevue, WA. Status: Defect continues after multiple repairs; safety concern due to stopping distance and vibration.

- Bellevue, WA, USA

GM is recommending that I replace my brakes for the 3rd time within 30,000 miles but cannot explain the irregular wear. I am confident that there is a larger issue causing this is the brakes failing are just a symptom of a larger issue that have failed to address after 6 dealership visits, escalating (twice - due to first advisor never getting back to me) to GM customer care, emailing an executive, regional service manager, and countless hours to fix the safety issue of my brakes (and the larger root cause issue). GM Customer Care Case #[XXX] - BRAKE SAFETY ISSUE 2024 GMC Sierra AT4 (VIN: [XXX]) - 46,000 miles Nov 2023: 1st visit - Brake squeal at 25K. Pads replaced, GM denied warranty. Early 2024: SAFETY ISSUE RETURNED at 30K miles. May 2025: 2nd visit - Worsening brake noise. Dealer couldn't replicate despite video evidence. Recommended $500 repair. Manager acknowledged "irregular/abnormal" wear. June 2025: 3rd & 4th visits - Tech found unexplained "weird line" on pad. Manager Kyle confirmed unusual wear but no root cause identified. June 10: Opened GM case #[XXX] after dealership failures. July 7: GM failed to coordinate promised appointment. July 14: 5th visit - Les Stanford Buick GMC, Ferndale. Tech rode with me, CONFIRMED BRAKE SAFETY ISSUE but offered no solution. CRITICAL SAFETY CONCERN: Recurring brake defect with abnormal wear patterns acknowledged by multiple technicians. Same brake failure pattern occurring 3 times in 18 months poses serious safety risk. Despite 5 dealership visits, video evidence, and confirmed defect, GM refuses warranty coverage while acknowledging the problem exists. Issue remains unresolved - I've exhausted all customer remedies. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Royal Oak, MI, USA

Trailer Brake Controller displays message on Dash intermittently that the trailer brakes are disconnected, and after a short pause it will say reconnected. This occurs multiple times a day. This did not occur with my previous GMC. I do have solar panels and Lithium batteries

- North Las Vegas, NV, USA

The DIC randomly displays -??check trailer wiring-?? then says -??brakes connected-?? over and over. When this happens the brakes on the trailer quit working, all lights continue to work all the time. It hasn-??t been back to the dealer yet but I will take it when I can. Other vehicles have no issues with this trailers brakes when towing. I have replaced the trailer pig tail 7 pin plug, cleaned all connections etc. The only thing that works so far is to disconnect one of 4 electric brakes then the DIC is silent and 3 brakes function. I even replaced some magnets in the trailer brakes but they were working prior to the DIC message that began on my second towing trip. There is a technical bulletin for some GMC trucks but my model isn-??t listed as one. I believe it to be the controller or software since nothing seems to work as far as the trailer is concerned. It isn-??t my trailers issue-??I know they are going to say it is.

- Valdez, AK, USA

I was driving my vehicle, with my 9-year-old son in the back, when it seemed to completely lose power and shut down (while I was driving!). The power steering, brakes, and gas all gave out. I was able to steer myself toward the side of the road where I waited for a tow. The vehicle would not start, nor would it shift into neutral, which led to towing challenges. This is a 2024 vehicle that I've had for about eight months, and it completely gave out while I was driving with a child in the back, which is a significant safety concern. Nobody at the dealership or GMC is able to offer anything with respect to information on how or why this happened and what you are doing to resolve the issue. From what I see online, this is a known issue that GMC is likely to be sued for in the future.

- Wayzata, MN, USA