Chevrolet Blazer Complaints (2020)

224 consumer complaints on file.

#11634709January 7, 2025
POWER TRAIN:AUTOMATIC TRANSMISSION
The contact owns a 2020 Chevrolet Blazer. The contact stated that upon reaching the destination and shifting the vehicle into park, a warning message displayed reading "Please shift to Park." After, the contact observed that he was unable to switch the vehicle off. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 128,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11632802December 28, 2024
ENGINE
Radiator was found to be leaking. Now thermostat is sticking. This could have caused my engine to overheat and catch fire. I have had a mechanical shop replace the radiator but could not afford to replace the thermostat yet. I had been seeing warning lights and still see warnings after radiator was replaced. They said “Steering Assist Reduced” and “ESC” and the engine light came on. I went to Auto Zone Dec 9th to have them tell me what was wrong. I took to shop on Dec 13th. I have googled several complaints about Chevy blazers having this particular problems. This is apparently a widespread issue that needs to be recalled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11629429December 7, 2024
ELECTRICAL SYSTEM
When I parked and tried to turn off car it would continue to run. I had to put it in park and drive back to park several times before car would turn off. There’s a recall for this issue on other blazers and I feel 2020 blazers should be included. The dealer replaced the shifter assembly, cleared OTC
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628254December 2, 2024
ELECTRICAL SYSTEM
We have experienced 2 issues that are very well known issues, I will list them here. First, is the Shift to Park issue, that involves an electrical switch and wiring harness on the shifter assembly. Second, is regarding a "driver assist reduced drive with care" alert message that includes Diagnostic Trouble Code (DTC) P0128, but is actually related to either the engine cooling sensor or the cooling thermostat housing assembly. Both issues are very well known, and many owners have had these issues.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11628126December 1, 2024
ENGINE
Steering assist warning and engine check light are on. I had an scan done and was told it was the thermostat and coolant temperature sensor which seems to be a common problem. There are no safety concerns to my knowledge. I feel this problem needs to be addressed as repairs are very costly.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627647November 27, 2024
ENGINE
The 2020 blazer is having the same coolant temperature problem the 2021 blazer has and the recall needs to be expanded. Thermostat messed up, constantly losing coolant, check engine light, steering reduced
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11627354November 25, 2024
POWER TRAIN, SUSPENSION, WHEELS
Questions Answered Below: What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle is at a GM Dealership now and is available for inspection. I have not authorized repairs as of yet. I am being told by the dealership: The ball joint on the control arm on the left side seized snapping the axle shaft - causing the tire to to turn out. The dealership has suggested: Mechanical repair costs $1,850, Plus an additional $2,000 due to wheel well damage caused by the failure. Has the problem been reproduced or confirmed by a dealer or independent service center? I am being told by the dealership: The ball joint on the control arm on the left side seized snapping the axle shaft - causing the tire to to turn out. How was your safety or the safety of others put at risk? Due to my slow speed turning out of the parking lot ~10 mph - the vehicle came to a sudden halt. However, had this occurred while driving any faster - it would have been very dangerous and put myself and others at significant risk. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? It was towed by AAA and has been inspected by the GM Dealership. That is the only inspection thus far. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Earlier in the day while pulling out of a parking spot and turning the wheel to the left I thought I felt some type of resistance then it went away as I started driving. No other symptoms or warning prior to the failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11625728November 16, 2024
POWER TRAIN, UNKNOWN OR OTHER
P0128 code- Assisted steering fault Check engine light Ac blowing cold Temp gauge flat lined Need to replace temp sensor and thermostat. Others with this issue have reported steering can completely lock up, which could cause serious accidents which could result in fatalities.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11625547November 15, 2024
UNKNOWN OR OTHER
When putting the vehicle into park, we are receiving a “Shift to Park” error. This issue appears to be common among thousands of General Motors vehicles. However, the dealership is unable to assist us because the repair bulletin only applies to the 2019 model year and does not include the 2020 model year. Despite this, the issue we are experiencing is identical to the one reported for the 2019 model.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11623955November 7, 2024
POWER TRAIN, ELECTRICAL SYSTEM
I am getting the message "Shift to Park" displayed while vehicle in park after turning the vehicle off. Looking online, it seems to be a common issue with Blazers as well as other GM vehicles. I found online that "the cause of the condition may be that the park switch in the transmission control (shifter) assembly is not pulling the BCM signal low to electronically show that the vehicle is in the Park position." If this is such a common issue on similar vehicle to mine since 2018 it appears, why is this not a Recall already?!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11622338October 28, 2024
ELECTRICAL SYSTEM, POWER TRAIN
When you shift it into park, it often doesn’t recognize that it’s in park and begins to roll backwards. This doesn’t happen every single time but at least twice a week and I have to use the parking break.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11621425October 23, 2024
ELECTRICAL SYSTEM, STEERING, UNKNOWN OR OTHER
Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11621426October 23, 2024
ELECTRICAL SYSTEM, STEERING, UNKNOWN OR OTHER
Vehicle keeps throwing “steering assistance reduced please drive with care” message. It causes my car fan to constantly run. It also causes the coolant gauge to not work the needle drops below that cool like it’s not on and then the car won’t blow cold air from the vents. This message tells me that something could be wrong with the steering which puts my safety at risk. This issue has been happening to me on and off for months now and there are multiple complaints of multiple Chevy owners having the same problem this issue needs to be addressed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11620241October 16, 2024
ENGINE, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Thermostat is faulty at 55k miles. Purchased 2020 Blazer RS, certified used from Chevy in October 2023. Less than 1 yr later, thermostat is stuck on cold, no ax or heat, drivers assist reduced notice. Same issues as previous documented complaints. The frustration is why this known issue is not covered under warranty or recall! I just had my 50k maintenance service done while this issue was occurring- service told me “well we cleared the codes” , 2 days later check engine is on, temp stuck on cold, fan is over worked and no a/c or heat- and driver assist turns off. The safety issues around causing more engine damage by improper cooling and reduction of driving assistance. Additionally, parking issue with vehicle not recognizing it’s in park and having to wiggle or jam the shifter- car drains battery and won’t lock until resolved. Car is took expensive to have a $1200 replacement not covered under warranty!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11617272September 30, 2024
ENGINE
2020 Chevy blazer with 50,000 miles just had to have the thermostat housing replaced. Check engine light would everntually come on. But it would say "Steering assist reduced drive with care" When hooked up to the computer it read code P0128. I have the extended warranty and still had to pay over $600 to have this fixed which is completey ridiculous for how new and expensice this car is.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11616774September 27, 2024
UNKNOWN OR OTHER
After putting the vehicle into park I received an error message "action required shift vehicle to park". I was then unable to completely shut the vehicle off or lock the doors and the alarm and notice continued to sound. I ended up spending over $1200 in repair costs and car rental to have the vehicle fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11616457September 25, 2024
POWER TRAIN, UNKNOWN OR OTHER
2020 Chevy Blazer - Shift to Park while Gear is already in Park: While putting the gear in park, the warning chime to shift it into park is initiated. It has happened 3 to 4 times in the past three days. I took the vehicle to the Local Chevy Dealership. The Service Team/Dept. diagnosed that the Transmission Shifter Unit Assembly must be replaced. The 2019 Chevy Blazer had these issues which prompted a TSB/Recall however it wasn't extended to the 2020-year models and Chevy Dealership refused to include it as a warranted repair which just passed 44,000 miles. This is a safety issue, and it should be replaced without additional cost to customer as this issue was already identified as a safety concern in 2019, however Chevy does not want to identify the issue as a covered repair per the manufactures warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11616160September 24, 2024
POWER TRAIN
The contact owns a 2020 Chevrolet Blazer. The contact stated while the vehicle was parked in the driveway, the vehicle hesitated. The contact stated that while attempting to turn off the vehicle, the vehicle independently shifted out of gear. The vehicle was driven to the local dealer to be diagnosed. The dealer determined that the failure was a power train failure. The vehicle was not repaired. The manufacturer was notified on the failure. The approximate failure mileage was 49,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11616198September 24, 2024
POWER TRAIN
The contact owns a 2020 Chevrolet Blazer. The contact stated that upon arriving at his destination, the vehicle failed to detect that the gear shifter was in park(P), preventing the vehicle from being turned off. The contact stated that the message "Please Shift to Park" was displayed. There were no warning lights illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 50,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11615853September 22, 2024
UNKNOWN OR OTHER
After I shift into park and press the button to turn my vehicle off, I receive a message on the dash that states "shift to park" and my vehicle will not turn off. This has happened on several occasions, but does not happen every time I attempt to turn my vehicle off. When I do receive the message, I usually have to restart my vehicle and move the shift out of park and back into park before I can turn the vehicle off. Sometimes, I am able to get the error message to go away by jiggling the shift.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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