2025 Chevrolet Silverado EV

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.

NHTSA ID

11756905

Incident

Jul 28, 2026

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 defects affect critical high-voltage battery thermal management and electrical systems. They create risks of sudden power loss, inability to charge, reduced drivability, and potential safety hazards. The vehicle has been out of service for extended periods and is currently parked due to ongoing safety concerns. The manufacturer was notified through warranty claims and EV Concierge case #95412771 but has not permanently resolved the defect. The failed components (high-voltage battery conditioning system, HVAC compressor, and related modules) are available for inspection upon request.

NHTSA ID

11750505

Incident

Apr 1, 2025

I feel asleep at the wheel somehow ended up hitting the car in front of me i know adaptive cruisae was on. After i hit the car i woke up and then ended up in a ditchg no airbags deployed or anything. I don't remember what happenedf up until i woke up. which was after i hit the car in front of me.

NHTSA ID

11745466

Incident

Jun 11, 2026

What component or system failed or malfunctioned, and is it available for inspection upon request? GM and dealerships have report extensive failures of the Telematics Control Module (TCM) that connects onstar and provides GPS navigation ability. There is currently no issued recall. Yes, this can be provided for inspection. How was your safety or the safety of others put at risk? Unlike 2024 vehicles, where Android Auto is supported, providing a safe, hands free workaround for the failure of the TCM, on 2025 models, GM deliberately removed support for Android Auto to force OnStar subscription services, even for basic navigation. This greed-based decision, along with undisclosed failures of the TCM and months of back order waiting list to fix, puts drivers at significant safety risk when forced to revert to other navigation solutions. It is guaranteed this decision (putting safe navigation behind a paywall, and the mass failure of this hardware) will result in loss of life due to forcing drivers to revert to legacy and unsafe practices, including being forced to use their phone in a non-handsfree method. They also removed basic lane keeping warnings and steering, traditionally free with the vehicle and now only available with a full onstar subscription. This liability is exclusively due to the push towards subscription models at the impact of public safety. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, dealership confirmed this failure and the extent of the failures across 2025 vehicles. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? All indications were normal except no data connectivity and GPS signal was also lost. As an officer in the military, I can't standby and let this deliberate impact to public safety continu

NHTSA ID

11722370

Incident

Mar 5, 2026

On Star Telematics Module is failed and on backorder and no ETA according to dealership and ONSTAR. This is a safety issue as GPS is unavailable, SOS is unavailable, Cannot Locate Vehicle if lost or stolen. The company is very slow in response and this seems to be a global known issue.

NHTSA ID

11707963

Incident

Dec 20, 2025

July 2025 RO (mileage ~5,500): Propulsion reduced power; AC loss/no cooling; charging failure; loose weather stripping; shark fin antenna loose; brake pedal clicking on stops; OnStar connectivity loss. July 13-22 2025 (mileage ~6,000): Electrical impairments; reduced acceleration/speed; vehicle not charging; weather stripping missing/loose; shark fin coming loose; brake clicking during stopping; no OnStar connectivity. September 11-October 20 2025 RO (mileage ~8,000-10,000): Intermittent transmission warnings; unexplained gear shifts; backup camera blackouts; infotainment/cluster glitches/freezes; repeated brake pedal clicking; hypersensitive safety system (abrupt hard braking/pulling). Recent unrepaired issues (December 2025, mileage ~13,000-13,100): Intermittent transmission warning light (on for 24 hours then off); unexplained shift to reverse while in Drive (rolled backward at stop light. no gear user input here to put truck in reverse. Had to restart truck to fix.); backup camera cutouts/blackouts while moving; infotainment/cluster glitches; repeated brake pedal clicking (5-6x per stop); hypersensitive safety system (abrupt braking/pulling to one side, overcorrections are safety hazard).

NHTSA ID

11706907

Incident

Dec 21, 2025

See attached document for complaint.

NHTSA ID

11703795

Incident

Dec 5, 2025

Navigational system is not functioning properly. On Star button remains in on position. All apps on dash will not connect to internet. Google Map cannot locate exact location of vehicle. Also phone app for the vehicle no longer communicating with the truck. Can only use key fab for minor functions. Can only use vehicle for short range driving, since long range driving plans cannot be determined.

NHTSA ID

11702362

Incident

Nov 12, 2025

If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing the Image processing module.

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

This Preliminary information communicates how to move U018B from Current to History.

This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven. When a repair is available, this PI will be updated.

This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with the image processor #2 and how to restore communication

This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.