During operation of the vehicle at approximately 45mph and sudden stopping/ breaking is required, truck fails to do so. It is a partial loss of brake pressure and a loud "whale cry" type sound that appears to be coming from under the hood. I have had it happen twice just recently; I have taken to dealer, and they cannot replicate the issue. I have caught the sound the second time on video. To summarize truck loses partial breaking power, pedal does not bottom out, but it feels like there is not as much pressure being applied to the breaks when needed. Once the sound stops all braking returns to normal.

- Paso Robles, CA, USA

I haul vehicles for a living. My rear wheels locked up and my truck came to a complete stop while I was on the highway. Luckily I was able to pull over and no one was behind me. It has happened a total of 3 times. There is no fix for my recall yet. I-??m terrified to drive, but this is how I make my living. What happens when it rains and my wheels lock up again. My life is on the line. I went to Chevrolet service they said they have no idea what could have caused this. Then a couple weeks later I get an open recall with no remedy. What am I suppose to do?

- Richmond, TX, USA

We tow a 2024 Grand Design Solitude 310GK with our 2020 Chevy Silverado 3500 diesel truck. We are getting frequent but intermittent loss of our trailer brakes during towing. As you can imagine this is a serious safety issue. We will be towing and receive a message on the display "Trailer Brakes Disconnected" then typically followed by "Service Trailer Brakes". This has been happening more frequently over the past 3 months. Imagine driving down a hill with a 15K pound rv pushing you and there are NO brakes on the 5th wheel. It is extremely scary and dangerous. I've researched on the internet and Facebook and there seems to be a "Technical Bulletin" from GM Bulletin No.: 23-NA-149 Date: September, 2023 recommending the replacement of the Trailer Brake Control Module. I've called to have the dealer replace our brake control module but it is not covered because it is a "Bulletin" and not a "recall". This is absurd and the manufacturer should take care of this known issue.

- Box Elder, SD, USA

The contact owns a 2020 Chevrolet Silverado 3500. The contact stated while driving 10-15 MPH and approaching a stop sign, the brake pedal was depressed down to the floorboard, but the vehicle failed to respond. The contact made a left turn to avoid a ditch. The contact stated that the vehicle then rolled to a stop. The contact shifted to low gear, turned the hazard lights on, and was able to drive to the residence. Upon inspecting the vehicle, the contact noticed that the brake fluid was leaking. The vehicle was towed to the local dealer, where the passenger's side rear brake pads, brake disk, and brake calipers were replaced. The contact stated that the failure recurred while driving. The vehicle was towed to the dealer, where the driver's side rear brake pads, brake disk, and brake calipers were replaced; however, the failure persisted. The vehicle was towed to a second dealer, Duke Chevrolet GMC (2016 N Main St, Suffolk, VA 23434), where it was diagnosed that the passenger's side rear brake pads, brake disk, and brake calipers were severely damaged. Additionally, the failure had damaged the rim of the rear passenger's side inner tire. The vehicle was being repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 4,500. The VIN was not available.

- Courtland, VA, USA

This problem concerns faulty emergency brakes. The issue was discovered in the driveway, when I engaged the parking brake with the vehicle in park and my foot on the brake. The Service Emergency Brake light came on and stayed on. When the problem was investigated at the dealership, it was found that the brake pad abradable material had delaminated from the brake shoe and was floating loose inside the drum. This same condition was found on 3 of the 4 brake shoes. Based on the appearance of the parts it did no appear they fell off when the parking brake was engaged, but had been loose for some time. With loose parts floating inside the brake drum sooner or later they will move and could lock up the rear wheel. The Chevrolet service department did not seem to be concerned with condition. A big concern is that the parking brake needs to be engaged to discover the issue. Many people rarely if ever engage their parking brake and could be driving around with loose parts in their wheels. The fact that this happened in just three years indicates the parts were produced with a faulty bond material. The abradable should never just fall off. On a backup safety system that is required on all vehicles, this issue should be taken more seriously by the manufacturer

- Rutland Town, VT, USA

I purchased a certified pre-owned 2020 Chevy Silverado 3500HD (6.6 Gas) November 2021. Within the next few weeks, I noticed brake squeaking that kept getting worse and the truck braking system would not stop like the 2500 I had traded in when I purchased the 3500HD. I had to adjust the trailer brake gain control up to as high as 9 or 9.5, should not have to adjust that high. I had trouble stopping at intersections and quick /emergency braking situations while pulling our trailer. This tells me the truck braking system is not working properly. Prior to leaving on a trip, I was having squeaking noise from the brakes that got louder and louder and more frequent. The dealer (Champion Chevrolet) checked the truck and brakes and told me it had the wrong brake pads and had replaced them. The first time I pulled off the interstate on my trip to Florida, the brakes began to squeak as they did before. This happened during the entire trip. Over the next few weeks after returning from my trip I had a couple of close calls trying to stop at traffic signals. My breaks would not stop me and I went into the intersection barely missing other vehicles. I am almost to the point of parking the truck until the dealer can make repairs that will fix the issues, but we use the truck to pull a trailer that is a major part on our income. I-??ve had the truck back to the dealership I purchased the truck from and they keep saying it is a brake pad issue. They have changed the pads twice so far (I think), and within days the squeaking and noise starts again. Periodically I keep getting a message (service trailer brake system) on my dash display that is difficult to get the warning to stop displaying. The trailer brakes had been checked several times and I have hooked other trucks to the trailer and it works fine. So, the issue is with my truck and the braking system. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Shelbyville, KY, USA

The contact owns a 2020 Chevrolet Silverado 3500. The contact stated that while driving 45 mph, the brake pedal was depressed and made an abnormal grinding sound. The contact stated that extra effort while depressing the brake pedal was needed to stop the vehicle. The contact stated the brake wear sensor indicated that the front brake pads were at 73 percent while the rear brakes were at 52 percent. The contact stated that the rear brake pads had failed. The contact took the vehicle to lone star Chevrolet (18900 northwest fwy, houston, tx 77065; (281) 653-6119) and was informed them that they should not rely on the brake sensor to accurately display the brake wear of the vehicle. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 23,000.

- Cypress, TX, USA