2019 Chevrolet Blazer Problems & Owner Complaints

Power Train 62 1 crash 1 injury

“The contact owns a 2019 Chevrolet Blazer. The contact stated that upon driving into a parking space and placing the vehicle into park(P), the vehicle independently accelerated into a building. The air bags deployed upon impact. The contact was treated at the scene by paramedics for minor scrapes and bruises. A police report was filed. The vehicle was towed to an independent collision center for repair. The contact was informed that a couple of bricks on the building were damaged due to the collision. The dealer nor the manufacturer had yet to be notified of the failure. The vehicle had yet to…”
NHTSA complaint #11477431, 2022 · crash · 1 injury(ies)

“Shift to Park issue: Known issue where the car fails to recognize it is in Park, preventing it from shutting off. Electronics: Potential blanked-out display screens, USB port issues, and malfunctioning cameras. Steering Assist: Restricted, temperature gauge goes to cold and radiator fan blows hard. I have to unplug negative cable to battery and reconnect and everything goes back to normal.”
NHTSA complaint #11729329, 2026

“P0128 code. Coolant temperature sensor and thermostat failure.”
NHTSA complaint #11718805, 2026

Electrical System 59 1 crash 1 injury

“The contact owns a 2019 Chevrolet Blazer. The contact stated that upon driving into a parking space and placing the vehicle into park(P), the vehicle independently accelerated into a building. The air bags deployed upon impact. The contact was treated at the scene by paramedics for minor scrapes and bruises. A police report was filed. The vehicle was towed to an independent collision center for repair. The contact was informed that a couple of bricks on the building were damaged due to the collision. The dealer nor the manufacturer had yet to be notified of the failure. The vehicle had yet to…”
NHTSA complaint #11477431, 2022 · crash · 1 injury(ies)

“Shift to park sensor Shift to park warning. It was reported to dealer”
NHTSA complaint #11753831, 2026

“Electronically controlled thermostat and sensor fail or get stuck at a much lower coolant temperature causing the dash to display the “steering assist is reduced drive with care.” It isn’t just a message, the steering is much harder to use potentially causing an accident. The ac completely doesn’t work causing potential for sensitive, elderly, or young children and pets to overheat inside, it’s significant risk of injury or death from the hot summer temperatures. The engine coolant temperature gauge is all the way down on C position which isn’t registering how hot/cold the engine gets potenti…”
NHTSA complaint #11739939, 2026

Unknown Or Other 54

“1º Transmisión 2º Me quede detenida en una autopista y no podía avanzar por que no respondía a los cambios de velocidad 3º Si 4º Si 5º No”
NHTSA complaint #11744461, 2026

“I was driving into a parking lot when my back passenger side window imploded like a rock was thrown at it, but no rock and nobody in sight. I looked all around for a cause but believe it somehow spontaneous shattered. Thankfully 3 minutes prior I had dropped my kids at school otherwise there would have been injury I am sure.”
NHTSA complaint #11740494, 2026

“My vehicle is breaking on its own. There are other vehicles riding behind me and it just stops out of nowhere. I think that's dangerous. I can be driving and I'm thinking I'm OK driving in a vehicle. Just just hit on break. I don't know where I just stops and while I'm driving and I think that's very dangerous”
NHTSA complaint #11733343, 2026

Engine 38

“Electronically controlled thermostat and sensor fail or get stuck at a much lower coolant temperature causing the dash to display the “steering assist is reduced drive with care.” It isn’t just a message, the steering is much harder to use potentially causing an accident. The ac completely doesn’t work causing potential for sensitive, elderly, or young children and pets to overheat inside, it’s significant risk of injury or death from the hot summer temperatures. The engine coolant temperature gauge is all the way down on C position which isn’t registering how hot/cold the engine gets potenti…”
NHTSA complaint #11739939, 2026

“The vehicle will not shut off when you shift to park. You are forced to sit in the vehicle for extended periods of time attempting to get the vehicle turned off. Apparently Chevy is familiar with eat problem and there are pending class action law suits in Ohio. According to the dealership Chevy has acknowledged there is a defect but no recall has been issued. We have had this issue for about two months and it is getting worse.”
NHTSA complaint #11730819, 2026

“Faulty thermostat. Check engine light comes on due to thermostat getting stuck open and needing to be replaced. This is terrible for the engine and the environment.”
NHTSA complaint #11720293, 2026

Steering 27

“Electronically controlled thermostat and sensor fail or get stuck at a much lower coolant temperature causing the dash to display the “steering assist is reduced drive with care.” It isn’t just a message, the steering is much harder to use potentially causing an accident. The ac completely doesn’t work causing potential for sensitive, elderly, or young children and pets to overheat inside, it’s significant risk of injury or death from the hot summer temperatures. The engine coolant temperature gauge is all the way down on C position which isn’t registering how hot/cold the engine gets potenti…”
NHTSA complaint #11739939, 2026

“Power steering goes out intermittently while driving.”
NHTSA complaint #11734804, 2026

“Shift to Park issue: Known issue where the car fails to recognize it is in Park, preventing it from shutting off. Electronics: Potential blanked-out display screens, USB port issues, and malfunctioning cameras. Steering Assist: Restricted, temperature gauge goes to cold and radiator fan blows hard. I have to unplug negative cable to battery and reconnect and everything goes back to normal.”
NHTSA complaint #11729329, 2026

Service Brakes 14 2 crash 1 injury

“BRAKE FAILURE OCCURRED ON A CITY STREET AT A 3 WAY STOP WHEN APPROACHING A STOP SIGN. BRAKES DID NOT PROVIDE ANY STOPPING POWER AND CAUSED THE VEHICLE TO BLOW THROUGH STOP SIGN AND CAUSED AN ACCIDENT INTO A DRAINAGE DITCH NOT INVOLVING ANY OTHER VEHICLES.”
NHTSA complaint #11315810, 2020 · crash · 1 injury(ies)

“Without warning, the brake pedal on my 2019 Chevy Blazer became hard, almost as if the car was turned off. I was unable to stop and slowly rolled into the back of a semi stopped at a stoplight. This was moments after exiting off of a major highway and could have been much worse. The car was taken to a mechanic and it was determined to be a failure with the brake booster. GM has issued recalls for this problem in several other models but the Blazer has been excluded. Based on online forums and complaints of multiple other Blazer owners, it seems obvious that Blazers should have been includ…”
NHTSA complaint #11602686, 2024 · crash

“We are noticing the coolant meter seems to be stuck on C, the AC is not blowing cold and we are getting a message that ACTION REQUIRED steering assist is reduced, drive with CAUTION. Today the brakes slammed on by themselves and almost sent my wife thru the windshield. Luckily she was in a clear area with no other cars around.”
NHTSA complaint #11699307, 2025

Vehicle Speed Control 7

“The transmission or torque converter has slippage and shuddering that has caused one or both to go bad. My safety was at risk due to this item beginning to fail to cause the inability to accelerate to maintain my position in traffic. The problem was recreated for the service technician. There was no warning or indication before this became an issue.”
NHTSA complaint #11734708, 2026

“My transmission can accelerate with the cruse control on, transmission also sputters at lower RPM. Lastly my shift to park issue kills the battery.”
NHTSA complaint #11660634, 2025

“engine - code p0128 engine coolant thermostat. This is a safety issue because it reduces the power steering on vehicle, auto stop stopped working, unable to remote start vehicle. Issue has been confirmed at an independent service center (I work at an auto collision center). Warning lamp - check engine light. Message on dash - power steering reduced. Appears everything came on at the same time. Per dealership items most likely needing replacement are engine coolant thermostat and engine coolant temperature sensor but ecm module could also need replacement. Advised common problem but no recall p…”
NHTSA complaint #11656851, 2025

Forward Collision Avoidance 6

“My vehicle is breaking on its own. There are other vehicles riding behind me and it just stops out of nowhere. I think that's dangerous. I can be driving and I'm thinking I'm OK driving in a vehicle. Just just hit on break. I don't know where I just stops and while I'm driving and I think that's very dangerous”
NHTSA complaint #11733343, 2026

“My transmission can accelerate with the cruse control on, transmission also sputters at lower RPM. Lastly my shift to park issue kills the battery.”
NHTSA complaint #11660634, 2025

“Po128 temp. Below normal, happens on a regular basis, at least 2 times a week,”
NHTSA complaint #11655087, 2024

Air Bags 3 1 crash

“i was in a severe accident on 10/6/2025 with a vehicle traveling at approximately 50+mph. My front quarter panel was struck crossing an intersection when a vehicle ran a red light. My vehicle sustained a lot of damage with my head striking the drivers side window --- with no air bags deploying”
NHTSA complaint #11691919, 2025 · crash

“WHILE DRIVING THE VEHICLE, AN AIRBAG ALERT GOES OFF RECOMMENDING SERVICE. IT DOES NOT MATTER WHAT SPEED I'M DRIVING, OR NECESSARILY THE WEATHER. BUT IT DOES TEND TO GO OFF MORE FREQUENTLY IF IT'S HOT OR COLD OUT. I HAVE BROUGHT THE VEHICLE IN FOR SERVICE, BUT THEY CAN'T SEEM TO FIGURE IT OUT. ALSO, WHILE DRIVING, AN ADAPTIVE CRUISE ALERT GOES OFF AT TIMES. I HAVE SERVICED THE VEHICLE AT LEAST THREE TIMES FOR THIS. IT IS HAPPENING LESS, BUT STILL HAPPENING.”
NHTSA complaint #11376226, 2020

“I WAS DRIVING HOME ON A COUNTRY ROAD ON THE EVENING OF JANUARY 21ST. THIS IS A NON-LIT, TAR AND CHIP WITH A SOFT SHOULDER ROAD. I HIT SOME BLACK ICE AND THE CAR SWERVED RIGHT, LEFT AND I GOT IT STRAIGHT AGAIN. DURING THE SWERVE, BOTH RIGHT AND LEFT AIR BAGS WENT OFF. I DID NOT HIT ANYTHING AND THE CAR NEVER LEFT THE ROAD. I MADE A CASE WITH GM. THEY DROPPED THE CASE BECAUSE THEY SAID THE VEHICLE NEARLY ROLLED OVER. I TOLD HER THAT I AM APPEALING THE CASE BECAUSE I WAS NEVER GIVEN ANY WRITTEN DOCUMENTATION AND IF THAT IS THE REASON THEY DROPPED THE CASE, THE REPORT HAS FALSE INFORMATION.…”
NHTSA complaint #11312024, 2020

Lane Departure 3

“I have replaced the thermostat sensor 3 times because keep getting assist driver assistance disabled throws code p1028 code coolant drops check engine light come on the auto stop quits working”
NHTSA complaint #11705932, 2025

“1. Wire harness with coil wires is the problem. It was fixed by a local shop and the vehicle can be inspected if needed. 2. The car throws a code for a faulty thermostat/coolant temp sensor. This will not allow the car get to oporating temp and could cause engine damage or not perform properly causing risk of an accident. Also this will reduce the driver assist features such as lane assist and adaptive cruise/braking. 3. Yes. 4. A local shop inspected the thermostat and coolant temp sensor and they oporated as they should. 5. The engine light comes on for the reasons mentioned above. It also…”
NHTSA complaint #11654938, 2024

“I took my vehicle to the dealership for the recommended oil change on 09/15/2023. I am extremely good about keeping up on the routine maintenance. Upon arrival, the technician asked if I knew that my check engine light was on. I stated no, it was not on during my drive in and has not been on previously whatsoever. I scheduled a diagnostic for 09/20/2023 and brought it back to the dealership with 68,191 being the mileage. It was determined that my thermostat needs to be replaced. I then began receiving the message Steering Assist is Reduced" which is very unsettling. I am finding that a lot of…”
NHTSA complaint #11558144, 2023

Back Over Prevention 2

“I have replaced the thermostat sensor 3 times because keep getting assist driver assistance disabled throws code p1028 code coolant drops check engine light come on the auto stop quits working”
NHTSA complaint #11705932, 2025

“When attempting to put my car in PARK, the car issues a warning stating the car is not in PARK, it doesn't recognize the gear shift being in park, therefore, I am unable to shut my car off or lock it up. It is a known manufacturing defect and GM refuses to cover the cost to add a bandaid to it as there is no permanent fix. This is a safety issue, and now my car is not reliable, nor safe. GM refuses to issue a recall on this.”
NHTSA complaint #11640686, 2025

Fuel/Propulsion System 2

“I bought a 2019 Chevy Blazer in February 2023 . The vehicle has issues when I fill it with gas. As soon as I gas up to full it starts jerking immediately afterwards. It makes loud popping sounds. The engine dies completely. It starts to tremble and will not go. When I try to turn in back on , the starter works very hard before it will turn back on. It does turn back on eventually but I have to pull over to the side and accelerate the engine until it finally stays on. I drives that way turning off at lights and stops. After about 10-15 minutes of this , it finally stays on long enough…”
NHTSA complaint #11653151, 2025

“1. The power steering (confirmed by dealership) is causing vehicle to pull very hard in one direction 2. Something fuel related does not allow my car to accelerate properly. Foot will be on the throttle and accelerating and without moving the throttle the vehicle will slow, RPMS will drop then suddenly begins to accelerate again. 3. Car states it’s not in park after I shift into park.”
NHTSA complaint #11443044, 2021

Structure 2

“1.The vehicle does not recognize it's in park periodically and will not shut off 2. Thermostat housing and thermostat failure 3. Tint covered chrome on exterior of body peeling off Only had the car 3 weeks Currently at dealership repairing thermostat out of pocket”
NHTSA complaint #11683602, 2025

“The contact owns a 2019 Chevrolet Blazer. The contact stated that they began to notice the grill at the front of their vehicle begin to flake slowly over time. The flakes had grown to the size of a dime. The vehicle was taken to the local dealer, where the contact was advised that the dealer would cover half of the cost to replace the grill. The vehicle was not repaired. The manufacturer was notified of the issue.”
NHTSA complaint #11620969, 2024

Tires 2

“I purchased this vehicle on June 26, 2020. When the vehicle was serviced on May 13, 2021 it had 8,366 miles on it and the tread wear was recorded at 6/32". In late June/early July 2021, I noticed the rear end of the vehicle seemed to slide around corners which lead me to research on the internet the Michelin tires that were on the vehicle. I found a GM Service Bulletin 19-NA-078 dated January 2020 that found issues with these tires. The vehicle's alignment was fixed and that problem seemed to go away. The vehicle was serviced on October 29, 2021 and I was told new tires were needed befor…”
NHTSA complaint #11440265, 2021

“TL* THE CONTACT OWNS A 2019 CHEVROLET BLAZER EQUIPPED WITH CONTINENTAL TIRES, TIRE LINE: CROSSCONTACT LX SPORT, TIRE SIZE: P265/45/R21, DOT NUMBER: A3XLWD313818. THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS, THE PASSENGER'S SIDE FRONT TIRE SLOWLY STARTED LOSING AIR. THE CONTACT RELATED THE FAILURE TO NHTSA CAMPAIGN NUMBER: 21V115000 (TIRES). THE CONTACT STATED THAT THE LOW TIRE PRESSURE WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED AND THE CONTACT WAS INFORMED THAT THE PASSENGER'S SIDE FRONT TIRE NEEDED TO BE REPLACED. THE VEHICLE…”
NHTSA complaint #11404512, 2021

Exterior Lighting 1

“My complaint is with the standard HID headlights in the 2019 Blazer and the very poor mounting system. The headlights are mounted TOO LOW to be effective in lighting the roadway, particularly where no shoulder stripping is on the roadway. Too, at unlighted intersections the lighting so poor that safe left or right turns cannot be accomplished. The HID lights themselves are a poor design in that they do not offer any useable peripheral lighting to add vision to the road shoulders. Due to the low mounting, the HID do not adequately shine light onto the road surface. Rather the available light…”
NHTSA complaint #11503592, 2023

Seats 1

“The front passenger seat belt was not clicking in. There was no damage done to the seat belt it just stopped working. The car is only 3 years old the seatbelt should not fail this is a safety issue. I had to pay $366 to fix it at the dealer. They said it was no longer under warranty and since there was not a recall they would not pay for it.”
NHTSA complaint #11500422, 2022

Visibility 1

“The contact owns a 2019 Chevrolet Blazer. The contact stated that whenever it rained, water would leak into the vehicle from the gasket around the sunroof. The headliner would catch the water and disperse water down the interior pillars, forming puddles in the front and rear passenger’s floorboards. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle had not been repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 40,000.”
NHTSA complaint #11466361, 2022

Wheels 1

“Snow/Ice build up inside tire rim's, causing improper tire balance. And also brake to freeze up when vehicle is parked, during driving in winter snow conditions. When driving on interstate roads at speed limit, the vehicle start's to shake a lot , like a flat tire. I talked to a Chevy dealer service manager about it and he said that their wasn't any safety massage out on that problem. I've never had a wheel snow/ice up like that before !! So now during the winter I check and clean out the snow/ice out of the wheel rim to prevent the vibration and driving problem. No warning light came on…”
NHTSA complaint #11513827, 2020