Warnings problems of the 2025 Chevrolet Tahoe

I am filing a safety complaint regarding my 2025 Chevrolet Tahoe premier for repeated brake assist/braking failures. Most recent incident: while driving, the check engine light came on. I turned the vehicle off for approximately 10 minutes and restarted it, but the check engine light remained on. Approximately 20 minutes later, multiple warnings appeared on the dash including: “brake assist failure press hard to brake,” “speed limited,” and “service esc. ” at that point, braking ability was severely reduced. I was close to my destination and approached a stop sign. I intended to roll through the stop sign because the brakes were not functioning normally, but another vehicle suddenly approached. I pressed the brake pedal with both feet. The brakes were stiff and hard to press. The vehicle still did not stop properly and came to a stop in the middle of the road past the stop sign. After arriving at my destination, the vehicle sat for approximately 1–2 hours. When restarted, the brakes appeared normal again, but the check engine light remained on. In the mychevrolet diagnostics app, it then showed warnings for engine and transmission system, transmission system, and four wheel drive system. While driving to the dealership afterward, the vehicle also began shaking. This same issue previously occurred on April 16, 2026. I was driving on the interstate when the brakes lost assist and the dash displayed “service esc,” “brake assist failure press hard to brake,” and “speed limited. ” after reaching my destination, I was told by someone at the dealership to turn the vehicle off for 10 minutes to see if that would fix things, so I turned the vehicle off for about 10 minutes. When restarted, all warning lights were gone and braking returned to normal. I still drove the vehicle to the dealership that same day for service. This is a repeated, intermittent brake failure / brake assist failure creating a serious safety hazard and near collision risk.

My vehicle has a 5,3 engine it now has 23000 miles. It goes to the dealership for all the oil changes. I check my dipstick before I took it in for service and warranty work for a third time first time at this dealership. But noticed there was no oil on the dipstick. So I went to auto zone and bought a new 3 gallon container and funnel. So they changed my oil and put it in and I got my vehicle back and I now bought a clear 2 gallon measuring bucket to see how much oil I had in it. I just videod my pour into the container and it is 3 quarts low. I was under the 7500-mile mark that gm requires you to change the oil. This is a new vehicle, and I shouldn't see this happening at all maybe 100000 miles but not 23000. I also just found out I have a one of a kind 2025 Tahoe with the new 2026 software that is completely messed up. The dealership wiped out critical engine data and no that is at zero when I picked it up. And the calculation for engine hours and idle is not the true numbers and it is corrupted. The other dealership didn't know my vehicle has the new data. So I can only assume they made a big mistake releasing this vehicle. So I also have a driver's seat that goes snap or clunk. Everything with gm has bulletins. I didn't buy a 86000 dollar used piece of junk I bought a brand-new truck. And gm will not let the dealership tear into the engine to find out what the noise is and the damage. I use a stethoscope and you can hear the lifters and rockers on the left bank, and the front makes strange noises and it has a hollow sound also. So sensor collision avoidance issues since the day I bought it. And with all the corrupt downloads from whatever software they used has destroyed my Tahoe along with the engine. I have video evidence also and the oil that just came out of my vehicle was gross dark and disgusting and smelled to high heaven. I need help.