2025 Chevrolet Blazer Problems

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.

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.

The contact owns a 2025 Chevrolet Blazer. The contact stated that the Forward Collision Avoidance system had erroneously activated on several occasions. While driving very slowly, the braking system suddenly activated while leaving a dealer. Additionally, while driving approximately 30 MPH, the braking system erroneously activated, causing the vehicle to abruptly stop. The automatic braking system was turned off, and the vehicle was later driven to the local dealer. The local dealer was unable to determine the cause of the failure and advised to deactivate the Collision Avoidance System. The contact sustained a neck injury during the failure while seated in the driver’s side rear seat. Medical attention was required. The failure mileage was 7,000.

I was going to park in a parking lot, when my car suddenly accelerated rapidly crashing into the building.

The vehicle accelerated without input and the brakes failed to respond. I am notifying you that this vehicle is a life-threatening safety risk and should not be rented again until a master technician clears the electronic throttle control and breaking system. This condition presents a serious safety risk and could lead to a car crash or injury. Additionally, the vehicles, climate control system behaved erratically, alternating between extremely hot and extremely cold air without adjustment. This may indicate a broader electronic or system malfunction affecting vehicle city.

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.

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.

The engine started acting weird in traffic going down hill on freeway. Eventually turned off turning into my driveway. No warning or engine light. Towed to dealer and is in for inspection, not sure if they can repair or if they have to replace the engine. When it arrived to dealer the engine light was on with a couple misfires

windshield leaking water inside of drivers compartment, headliner & side pillars (causing stained areas) as well as the top of onstar and electrical buttons on the overhead console . Found wet cup holder. Vehicle does not have a sun roof. GM is aware of this issue from the factory GM plant in Ramos Arizpe, Mexico. This defect is because of lack of not being sealed properly during the assembly process. The windshield has a factory OEM rubber seal attached to a NEW windshield. This rubber seal is NOT a part that can be purchased separately to fix the problem. By replacing the entire windshield with the new factory rubber seal and the channel that the entire windshield fits into is resealed with urethane should fix the issue.. Trying to reuse the current windshield & rubber seal and using sealer to reinstall it stretches out the rubber seal & will still leak. This leak can get into the electrical controls for safety system overhead controls. Extra care must be taken to remove the windshield as to not damage the roof line in anyway. Vehicle is going back into dealership to fix issue again. Vehicle was resealed with existing windshield and showing signs of leaking on L&R pillars.

The visibity in sunlight is dangerously impaired with the reflection of the dashboard on the windshield . Hard to see and really distracting while driving .

Driving home about 25 mph, front passenger tire blew. Put donut spare on,. Took to Dealer next morning. front control arm bushing torn out of control. This is dangerous and should not have happened.

1).Engine stopped on Interstate hiway with just 2024 miles. Towed to Chevy dealer. New engine installed. Upon return of car emission system failure. 2) Car delivered with defective windshield with major (crackle) throughout very distracting at sunrise/sunset. Replacement not much better.

The vehicle accelerated without input and the brakes failed to respond. I am notifying you that this vehicle is a life-threatening safety risk and should not be rented again until a master technician clears the electronic throttle control and breaking system. This condition presents a serious safety risk and could lead to a car crash or injury. Additionally, the vehicles, climate control system behaved erratically, alternating between extremely hot and extremely cold air without adjustment. This may indicate a broader electronic or system malfunction affecting vehicle city.

2025 Chevy Blazer EV charging door frozen on the inside of door seal from snow storm

This issue is about "OnStar Telematics Control Module", since last 3 months.. mutiple services in my car stopped working. No GPS, TPS warning messages.. No internet..This issue has been reported all across US and GM, NHSTA needs to investigate this.

The contact owns a 2025 Chevrolet Blazer. The contact received notification of NHTSA Campaign Number: 25V433000 (PARKING BRAKE). The contact stated that while driving 35 MPH, the vehicle vibrated abnormally. The contact exited the freeway and the front passenger’s side tie rod detached from the vehicle and the vehicle lost power steering functionality. The contact was able to pull over to the curb. No warning lights were illuminated. The vehicle was inspected the contact noticed that the front passenger’s side wheel was bent and the tire was deflated. The vehicle was towed to the residence. The vehicle was not taken to the dealer or an independent mechanic. The vehicle remained at the residence unrepaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 22,000.

Bridgestone Alenza A/S 2.0 275/45R21 I stopped to charge my vehicle, and noticed a large bubble in the sidewall. The tire has just under 11,000 miles.