Chevrolet Blazer Complaints

289 consumer complaints on file.

#11729054April 3, 2026
SERVICE BRAKES
Rear brake automatic parking brake motor locked rear wheels. Dealership diagnosed and repaired at my cost. Service parking brake light illuminated and rear brakes locked not allowing vehicle to be moved. After a few restarts brakes released.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727288March 26, 2026
ENGINE
My Drive Assist stopped working. Then my Air conditioning stopped blowing cold. Then the temperature gauge stopped working. Upon turning the car off the fan continued to run for several minutes. Took to repair shop where it required a new thermostat housing, coolant temp sensor and coolant flush. The total cost for repair was $1,131.52. The car has 37,000 miles on it. Barely out of warranty. This is a well-known issue among Chevy owners.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727054March 25, 2026
UNKNOWN OR OTHER
2025 Chevrolet Blazer EV AWD purchased 5/23/25 (under 3,100 miles) The vehicle's Telematics Control Module (TCM) has failed, disabling the built-in navigation system, OnStar services, remote start, and My Chevrolet app connectivity. The dealership confirmed the TCM needs replacement and the part is on backorder with no ETA. This is a known issue affecting this model. I am reporting this as a safety defect for the following reasons: The 2025 Blazer EV does not support Apple CarPlay or Android Auto. With the built-in navigation disabled, the only way to navigate is by using a phone, which requires visual attention to a separate small screen while driving. Under Pennsylvania's hands-free law (75 Pa.C.S.A. § 3316.1), use of handheld devices while driving is a primary offense, making phone-based navigation both unsafe and legally problematic. On at least one occasion, the navigation system appeared to be functioning normally at the start of a trip but was providing materially inaccurate directions mid-route (e.g., instructing me to turn onto a road I had already been traveling on for miles). A system that displays as operational while delivering incorrect routing data is dangerous because the driver has no way to assess its reliability before departing. GM's EV Concierge characterized the loss of navigation as a non-safety feature issue and suggested using a phone holder. This response is inadequate given the vehicle's lack of CarPlay integration, which makes the built-in navigation the only safe, integrated means of route guidance. This vehicle has also required three prior unrelated warranty repairs in 10 months: a recall for a faulty rear parking brake harness (9/25), a 12V battery failure requiring flatbed towing (11/25), and a faulty tire pressure monitor (12/25). The pattern of recurring failures across unrelated systems at minimal mileage indicates a systemic quality issue with this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726942March 25, 2026
ELECTRICAL SYSTEM
The contact owns a 2021 Chevrolet Blazer. The contact stated that while attempting to start the vehicle, several unknown warning lights illuminated, and other lights inside the vehicle flashed on and off. The contact stated that the failure also occurred while driving at various speeds. A dealer was contacted. The vehicle was taken to several dealers for diagnostic tests; however, the diagnostic result was unknown. The manufacturer was notified of the failure and informed the contact that there would be a callback about the cause of the failure; however, there has been no callback yet. The approximate failure mileage was 50,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726743March 24, 2026
SERVICE BRAKES, FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726370March 23, 2026
UNKNOWN OR OTHER
The onstar module is broken and on significant backorder. Without it, standard features in my car such as GPS, onstar safety, remote control, and other features do not work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726216March 22, 2026
UNKNOWN OR OTHER
There is a defect in the motorized electric charge port door. When you press the button it rarely works to open the charge port door leaving me with unable to charge my vehicle. I fear this will leave me stranded and my only course of action will be to rip the door off in anger. Many others are experiencing this issue. Chevy needs to address this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725131March 18, 2026
ENGINE, POWER TRAIN
I was driving to work as I normally do and work is only 15 miles away from home I get to work turn into the parking lot stop to scan my badge and I hear knocking noise I thought it was coming from the truck in front of me but after he moved on I still heard the noise and I found a parking spot as soon as I could and the engine light on the dash came on and the motor that was knocking is definitely my Blazer with only 11,222 miles on it. I always keep up on my vehicles maintenance in fact I just had the oil changed at Ray Skillman Gm Dealership2/16/26 it had 10,960 miles on it. Before that I had the oil changed at Ray Skillman 08/20/25 it had 7,720 miles on it then and before that. The very first oil change 22/ may /25 the mileage was 5,354 on it was at Hare Chevrolet where I purchased this Blazer RS Brand new it had 34 miles I always get the oil changed when it gets to 25%
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724820March 16, 2026
AIR BAGS, STRUCTURE:BODY, SERVICE BRAKES
On 10/29/25 I brought the vehicle in to Richard Lucas Chevrolet due to the alert from my insurance co that there was a recall with parking brake system. The dealership checked the car and told me they had to order the part that was needed due to the recall. Prior I also made the dealer aware that the car had recently stalled on me in the middle of the street, I was told by the dealership that this was apart of the recall! The dealership allowed me to drive the car and stated to me that they would call me when the part comes in! 2 days later on 11/1/25 while driving the car lost control, the brakes wouldn't stop and I crashed into 2 parked cars and landed on top of the second parked car which was a pickup truck! All of the airbags deployed and my body is pretty messed up from this horrific crash and this has caused fear in me of driving!
Crash:
Yes
Fire:
No
Injuries:
1
Deaths:
0
#11723904March 12, 2026
ENGINE
Coolant smell when parked with engine running. Radiator was replaced under warranty at ~16,000 miles Coolant smell again ~49,000 miles. "Pressure tested at dealership with following notes: "Found radiator core on driver side seeping/leaking. provided estimate on cost. no repair made during this visit." Many forums on 2021 Chevrolet Blazer note poor quality in radiators. This would be the 3rd radiator in less than 50,000 miles on the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723823March 12, 2026
POWER TRAIN
My 2021 Chevy blazer Lt v6, has a service bulletin extending warranty on thermostat malfunction, that also causes the fans to run after the car is off. My vechicle was experiencing this issue, went into my local dealer, they claim thats not my issue, I need a new radiator, that has never leaked, or the car running hot. Beyond that the radiator has a service bulletin, they can fail, do to poor quality from supplier, some were replaced under warranty, some were not. This vechicle has 47000 miles, I should not be responsible for this issue. Thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723647March 11, 2026
ELECTRICAL SYSTEM
The vehicle has turned off twice while driving. Endangering the safety of everyone in the vehicle
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722913March 9, 2026
TIRES:SIDEWALL
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722092March 4, 2026
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The contact owns a 2026 Chevrolet Blazer. The contact stated that while reversing from the driveway, the automatic emergency braking system erroneously engaged, causing the vehicle to stop abruptly. There was no warming light illuminated. The contact sustained middle back pains as a result; however, the contact had not received medical assistance. The dealer was notified of the failure and advised the contact to bring the vehicle in to determine whether an adjustment was needed. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 7,000.
Crash:
No
Fire:
No
Injuries:
1
Deaths:
0
#11722086March 4, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2024 Chevrolet Blazer. The contact stated while the vehicle was at the dealer to be serviced, the contact was informed that the oil pressure was low. The vehicle was taken to the dealer, and the dealer confirmed an oil leak. The contact was informed that the manufacturer had not developed a particular part to fix the vehicle. The contact was informed that blue silicone was used to seal the leak. In addition, the contact stated that the failure reoccurred. The vehicle was taken back to the dealer several times, but the failure persisted. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 18,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721657March 3, 2026
UNKNOWN OR OTHER
At 48,000 miles, check engine light came on and loud fan sound continued after turning car off. Took car to dealership where I was informed I needed a new radiator and it is not covered by warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720946February 27, 2026
ELECTRICAL SYSTEM, ENGINE, SERVICE BRAKES
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720888February 27, 2026
ENGINE
The radiator developed a leak at around 36k miles and needed to be replaced. My understanding is that this is an ongoing problem with this vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719873February 23, 2026
POWER TRAIN, UNKNOWN OR OTHER, ENGINE
When shutting off the car, the fan continued to run. I started the car up again to see if this would allow the fan to turn off. No luck. The steering assist was dis-enabled on the dash. I took my car to the dealer to find out that it has a bad thermostat and that my radiator was leaking. The thermostat was covered but I had to use my extended warranty to pay the additional repair. My deductible for my extended warranty is $300.00. My daughter has a 2021 Chevy Blazer and the same situation happened. There was a recall and all her parts were covered.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719088February 19, 2026
ENGINE, POWER TRAIN, ELECTRICAL SYSTEM
This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,000 miles, my 2021 Chevrolet Blazer experienced a sudden throttle body failure while driving. The vehicle entered reduced engine power/limp mode without warning and acceleration was significantly limited. This created a safety concern while driving in traffic, particularly when merging and crossing intersections. Diagnostic code P2101 (Throttle Actuator Position Performance) was present. A Chevrolet dealer confirmed an internal throttle body failure and replaced the throttle body assembly. Although the repair was completed, this failure occurred at relatively low mileage for a critical engine control component. A sudden loss of acceleration can pose a safety risk depending on traffic conditions. Since filing my original complaint, I have identified multiple similar reports online and in owner forums describing premature throttle body failures in GM vehicles with similar symptoms (reduced power/limp mode and limited acceleration). This suggests the possibility of a broader pattern involving this component. I am submitting this additional report so that NHTSA has a complete record of the incident and potential pattern of premature throttle body failures. If this issue is widespread, it may warrant further review or investigation as it affects vehicle acceleration and safe operation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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