2025 Chevrolet Blazer electrical problems

Filed Oct 27, 2026 · Electrical · 107,000 miles · KY

The contact leased a 2025 Chevrolet Blazer. The contact stated that while in drive(D) or reverse(R), the parking brake independently engaged. An audible chime sounded, erroneously detecting nearby objects. The vehicle was taken to a local dealer. The manufacturer was made aware of the failure by telephone. The failure mileage was approximately 107,000.

Filed Oct 19, 2026 · Driver assistance, Electrical · MI · crash · 2 injuries

Driving this vehicle in cruise control at around 70-80 mph, on an empty freeway early in the morning. No traffic but suddenly and for no reason the collision prevention system activated causing the steering wheel to turn all the way to the right and locking in place, the brakes activating, and leaving me no control sending me and two passengers in an embankment and the car on its passenger side.

Filed Oct 11, 2026 · Electrical, Lights · WI

Headlights Daytime running lights only 50% ? no back up lights no Brites, windshield wash not working then on going 6 dealer trips 9 days in shop for info screen / GPS,Radio&Phone

Filed Oct 6, 2026 · Brakes, Electrical · OH

Was driving on highway and parking break light flashed on - break was not on. Tried to turn off and couldn't - car still driving. Then all these alerts started coming up "break failure", "no AWD" "Break failure cannot accelerate past certain speed". I tried to pull over the stop the car and no breaks would work including parking break. Eventually rolled to a stop without hitting anything. Car under warranty with 11,000 miles, called dealership who had lack of concern for urgency of the issue. This put not only myself and child but also many other drivers on the highway during rush hour. Very concerning and lack of response from dealership even more concerning.

Filed Sep 14, 2026 · Electrical · FL · crash · 1 injury

What component or system failed or malfunctioned, and is it available for inspection upon request? On September 12, 2026, while parked at the top level of a parking garage, the vehicle unexpectedly began rolling forward after being parked and exited. The vehicle subsequently struck a concrete wall. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? On September 12, 2026, my son parked the vehicle on the top level of a parking garage. He exited the vehicle while I remained seated in the rear seat and his girlfriend remained in the front passenger seat. I later moved to the driver's seat to speak with her. As I exited the vehicle to meet my son, the vehicle unexpectedly started rolling forward on its own. Nothing was touched or intentionally activated prior to the vehicle moving. Because the vehicle began moving while I was exiting, I fell and suffered injuries including a scraped knee, swelling and injury to my foot, pain in my hands, and abrasions on my arm. The vehicle continued rolling and struck a concrete wall, causing damage to the front of the vehicle. The unexpected vehicle movement placed me, the passenger, and other nearby individuals at risk of serious injury. Has the problem been reproduced or confirmed by a dealer or independent service center? I am reporting these incidents for investigation. The vehicle is available for inspection by Chevrolet, the dealer, the federal safety agency investigators, insurance representatives, or other authorized parties. No warning lamps, messages, or other alerts were observed prior to the Rear Automatic Braking events or the vehicle roll-away incident. The braking events and vehicle movement occurred unexpectedly and without warning. I no longer feel safe operating this vehicle. Between the multiple false activations of the Rear Automatic Braking system and the incident on September 12, 2026, where the vehicle unexpectedly rolled forward and caused injury

Filed May 27, 2026 · Driver assistance, Electrical · MO

Complete and total failure of the telematics module resulting in loss of self driving, onstar, WiFi, gps, and all connected services. Severe battery drain due to module forcing the vehicle to completely shut down while driving, resulting in loss of power steering and brakes.

Filed May 20, 2026 · Electrical · MI

The Telematics Module failed and is on backorder. This is a known issue across the U.S. This makes it so OnStar doesn't work and I am paying for it. Not just that the safety concern of it not working. GPS, Maps, Level 3 Tesla doesn't work. Car is really not usable as we can't charge on a level 3 when going over 100 miles. We have loss access to navigation, Google Built-In services, the myChevrolet apps, and even core safety and convenience features tied to connectivity, including OnStar and Super Cruise.

Filed Feb 27, 2026 · Brakes, Electrical · NY

On two separate occasions the vehicle lost all power while driving. On December 5, 2025 turning on to a main road from parking lot the vehicle shut off with no prior warning lights. Shifted vehicle to park. No power to anything, unable to unlock doors, unable to turn on hazard flashers, stuck in the middle of the road at night. Waited a minute and pressed the start button and vehicle started with no problem. Again, on February 24 , 2026 making a left turn in intersection, without any warning the vehicle shut off… no power at all. Stuck in middle of road with no lights , no hazard flashers ,unable to get out of the car. Few minutes later vehicle started again. The vehicle did not stall while stopped, it completely lost power while moving. Reported problem to West Herr Chevrolet of Hamburg NY , brought vehicle in to dealership on February 25, 2026 and they were “unable to duplicate the concerns” The dealership paperwork states that the vehicle stalled while stopped, this vehicle lost all power while it was moving. We now have the vehicle back in our possession but are extremely concerned for our safety and the safety of others.

Filed Jan 7, 2026 · Electrical · MI

Telecommunications module failed - no Onstar, no Navigation which means no help to find charging station, and Mychevrolet app remote connection is not functional. Local dealer states this is a known issue but there is a significant backlog to investigate, and no loaner vehicles available. Wide spread issue across many GM vehicles. Very disappointing experience including service repair. Due to lack of loaner i am unable to drop off as this is my primary driven vehicle.

Filed Dec 19, 2025 · Electrical · CA

Telematics control module failure