2025 Chevrolet Silverado electrical system problems

“The contact owns a 2025 Chevrolet Silverado 1500. The contact stated that while driving 45 MPH, the vehicle lost automotive power. The vehicle was restarted within seconds and the message "Push to Start" was displayed. The vehicle was taken to the dealer to be diagnosed, and the contact was informed that the failure was not duplicated. The manufacturer was notified of the failure. The failure mileage was 30,000.”

“The specific cause has not been identified. On XXX6, my 2025 Chevrolet Silverado 1500 Custom LT Trail Boss unexpectedly rolled away while parked and unoccupied, striking another parked vehicle. The truck remains at Modern Chevrolet and is available for inspection. GM/ESIS opened a safety and product liability investigation and is arranging inspection/data retrieval. I parked at Walmart in [XXX], shut the truck off, exited, locked it, and walked away. Shortly afterward, I heard a sound resembling the key-fob-left-inside warning. My key fob was in my pocket, so I returned and saw the truck moving with no driver. Another person and I tried to stop it. I entered through the driver’s door and pressed Start/Stop several times, but it would not start while moving. It continued moving and struck another parked vehicle. Vehicle dropped off on XXX and Modern Chevrolet could not reproduce the incident or identify the cause. The service advisor stated it “came out of gear but don’t know why” and escalated it to GM. GM/ESIS plans to retrieve SDM/airbag data, and I requested any Tech II/MDI scan data. No warning lights, messages, or chimes were observed during the incident.…”

“The contact owns a 2025 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, there was an abnormal odor inside the vehicle. The contact stated that water was coming from underneath the driver’s side dashboard. Additionally, the steering wheel was jerking while the lane assist feature was activated; however, the vehicle was not veering to the left or right side of the lane. No warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed, and several failure codes were retrieved, and a water test was performed; however, the failure could not be duplicated. The vehicle was repaired; however, while the contact's husband was driving at an undisclosed speed, there was an abnormal sound coming from the vehicle. The driver pulled over to the shoulder of the road, and after selecting the 2WD feature, the 4WD feature was disengaging, even though the 4WD warning light was not illuminated. The vehicle was taken to another local dealer, Chevrolet of Troy (1375 S Market St, Troy, OH 45373) for a second opinion. The contact was informed that DTC: U1611 was retrieved, and several unknown repairs were needed. The…”

“3 weeks ago all the warning lights went off. The vehicle is still under warranty. I brought it to the dealership. They denied the warranty because of mud that was caked on the undercarriage damaging the wiring and steering assembly. This truck was used on a dirt driveway that gets wet and muddy during the spring. That is what a truck is for. I believe there is a manufacturing defect that caused this problem.”

“The vehicle experienced repeated high-voltage system warnings and battery conditioning system failures. On multiple occasions the “Service High Voltage System” message appeared along with codes P0530 and P1C26 related to the lithium-ion battery conditioning system that controls heating and cooling of the high-voltage battery pack. A critical U3578 code triggered an urgent OnStar alert requiring immediate service. The high-voltage fault was linked to an overcharged HVAC system that caused the A/C compressor to fail. This led to a full HVAC system replacement, radio/infotainment failure, and multiple module reprogrammings. The vehicle could not charge past approximately 65% and showed a red 12-volt battery light after charging. Burning electrical smells were present during some incidents. Warning lights and messages appeared repeatedly and were confirmed by OnStar diagnostics on April 28, May 6, May 19, and June 16, 2026. The dealer performed warranty repairs including compressor and HVAC replacement per TSB 25-NA-130, yet the same high-voltage and battery conditioning faults returned. The problem has been reproduced and documented by the dealer and OnStar. These…”

“On Thursday, July 9, 2026, at approximately 2:30 p.m., I was driving my 2025 Chevrolet Silverado 1500 Duramax on Highway 40 while towing a properly connected trailer. The Multi-Flex tailgate had been fully closed and latched before I began my trip and had not been opened at any point prior to the incident. While traveling on the highway, a California Highway Patrol officer pulled alongside my vehicle and alerted me that my tailgate was down and bouncing on the trailer I was towing. I immediately pulled over to the shoulder and observed that the entire Multi-Flex tailgate had unexpectedly unlatched and was resting on the trailer. I closed and latched the tailgate, which appeared to operate normally, and continued to my destination. At no time before or during the incident did the vehicle display a "Tailgate Open" warning or any other warning message on the instrument cluster. The unexpected opening of the tailgate caused it to strike the trailer, resulting in damage to the Multi-Flex tailgate, the rear bumper, and the trailer. The vehicle has approximately 11,000 miles, was purchased new, and has not been modified. I have opened a case with General Motors, and…”