general problems of the 2020 Chevrolet Blazer - part 2

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.

The original issue was that the temperature gauge was pegged on cold and the a/c was inoperative. The vehicle’s fans would run continuously even when the engine was cold. This created a safety concern since the engine’s actual temperature could not be monitored, and loss of a/c affected drivability in hot conditions. The issue appears related to the engine’s coolant temperature sensor or thermostat system, which causes incorrect signals to the temperature gauge and hvac system. The condition has been reported by multiple owners of the 2020 chevy Blazer 3. 6l. In my case, the malfunction happened suddenly and has been repeatable. There were no prior warning lamps until the issue occurred, at which point the temperature gauge stopped working properly and the air conditioning failed.

Car is cutting off while driving , I’m driving on a busy road , engine jerks and stall out leaving me with no power to accelerate. Brakes work but gas pedal not so much . I have to cut off the car hoping it turns on , cause it don’t want to turn over once I decide to turn it off.

6/12/2024 in damon parking lot in rochester mn. Going less than 10 miles an hr- cars in front of me and behind me looking for a parking spot. Stop and go at times. Went to turn corner to go from one level to the next and my Blazer took off "like a bullet". No control over accelerated speed- hit outer cement wall and slammed into 2 parked empty suvs. Could not go any farther. The 2 suvs slammed into cement wall in front of them. Injuries to both my passenger and myself. I have no idea what happened - it was so fast- I do know I had no control over accelerated rate causing accident. My 2020 chevy Blazer was totaled- it was inspected by american national insurance CO. Absolutely no warnings. Police report did not include any witness. Blazer is in the hands of the insurance CO. Chevy Blazer took off like a bullet - could not stop it!!police report 24026393 rochester police dept unable to upload . Checked no police report below so I could continue report.

Shift to park issues. Car not reading that it’s in park.

Approximately three weeks ago, our 2020 Chevrolet Blazer's check engine light came on. It has a little over 63,000 miles on it. I took it to a private service garage where they diagnosed the code as p0128, or coolant system issue. They concluded that it was the thermostat. I did some checking on the warranty and it turns out that the warranty on this car expired at 61,066 miles. I then took it to serra Chevrolet in grand blanc, mi where they diagnosed the same error code, or p0128. They took the car back to give me a service estimate and when they returned they diagnosed not only the thermostat as defective. This has become a common problem with this car and the 3. 6 liter engine in particular. We have been told that this is a "known issue" by two different general motors dealerships, specifically in their respective service departments. However, the owners are now having to pay for the complete replacement, both parts and labor, for these issues. Given the fact that these are a known issue, it seems to me that these need to be elevated to at least a bulletin, if not a full recall. The repair and replacement for the thermostat and sensor is in excess of $1,000. Again, since this is a known issue, it is my belief that general motors should pay these expenses.

This vehicle is currently on its third radiator since it was purchased, 4 years ago. That’s almost 1 radiator per year. The vehicle also has transmission issues on the highway. The dealer replaced the torque converter but vehicle is still hesitant and bucking on the highway. This vehicle only has 64,000 km and would cost thousands in repairs if it wasn’t under warranty.

The "steering assist reduced; drive with care" notification began coming on the dash with significant changes in outdoor temperature, as of last fall 2023. The temperature gauge on the dash would then not work and would remain at cold. Eventually the check engine light will come on however all of this will clear when the outdoor weather is stable again. As I live in mn you can imagine there are many variations to our temperatures. This occurred at the beginning of fall 2023, then winter 2023, then spring 2024. It is clear from consult with mechanics that this is all related to the thermostat being stuck open/closed. . Read more...

Steering assist reduced warning came on as I was driving. Electric steering module has gone bad. Temp gage and ac stopped working as well. No accident yet but this is a known safety defect that needs to have a recall. The steering wheel could lock up. Force gm to recall this vechile before people die!!.

Transmission issue, computer repair, constant issues.

Continues "reduced steering assistance', thermostat won't register, stay on cold, a/c blows warm air. We added coolant, replaced battery. Code goes off, within a few weeks comes back on. About to replace the whole thermostat and sensor. Many many Blazers having the same issues.

My vehicle needs a new purge pump which is part of the emissions system. This is a common problem on this vehicle so it should be covered by gm since it is part of the emissions system.

The car repeatedly has an error pop up that states steering assist is no longer activated and to drive with caution. The thermostat during this is also fully on cold. The check engine comes on after. The sensor and thermostat are repaired based on the code and problem persists. Same problem all over forums but chevy refuses to fix as no recall. This is very concerning as the car may randomly go into limp mode while driving on the highway at 70mph putting at risk for crashing. The steering assist is also out putting at further risk. This is despite fixing and clearing the codes shown. This is a known issue that chevy is refusing to address/recall.

I was driving on express way 96w left lane busy 5 o'clock traffic car just died it was stop n go I could have been killed if it wasn't for a man that stopped behind me he couldn't help another person stopped and push the car in n to a grass area where at least I wouldn't be smashed in called 911 state police inform help van he didn't look at it my friend was there to pick me up called tow truck they dropped it off at chevy dealership in howell mi.

Esc message on dashboard & all wheel drive disabled & lane assist traction control liggt turns on & parking brake light turns on while driving caused for my electric component to act all crazy including my sunroof I’ve been in the dealer over over try to fix it and that is concerning reason for my safety while u are driving and all those lights come on and yes I have took it to the dealer multiple times to fix this situation and yes the vehicle has been inspected by the manufacturer and yes it has happen before I have a 1 year with the car the problem first came about couple month after I got the car and been having problem since then I bought the car 5/13/23.

My 2020 chevy Blazer began demonstrating possible problems with the transmission in November 2021 which have continued to date. The rpms will rapidly increase and the car will feel as if it is jolting forward. If driving below 20 mphs, when I try to accelerate to a higher speed, the car will drag and then skip forward. I have videos showing this and have taken it to the dealership on two occasions but it couldn't be replicated and no codes show during diagnositics. The car is currently being repaired (at the dealership since 3/18/22) due to 3 separate concerns that are CO-occuring which seems quite strange to me. The thermostat has gone bad, causing my check engine light to come on while driving (and having to have it towed). The car is also not recognize my remote key to operate the car. I am also getting "steering assist reduced" notifications while driving. I had the battery replaced 3 weeks ago because that was felt to be the cause of the steering assist notice, but after 1 week the notices started occurring again. I will also occasionally get "ecm" notices while driving. I don't see how all of this could be happening at the same time and it not be indicative of a more major powertrain issue. I do not feel safe driving the car, even when these separate issues are repaired because I am fearful of the core, underlying cause.

Value stem gasket covers need replacing oil spilling out everywhere it’s a 2020 should not be happening oil leak hot and cold temperature not working properly a warning flashing for the power steering being deceased and not use that car get moved every hour just about always in jt working or just taking a break the auto shut of makes transmission slip or sounds like it is.

What component or system failed or malfunctioned, and is it available for inspection upon request? multiple components in the engine timing and transmission system have failed. These include: camshaft actuator solenoid valve failed twice (at ~30,000 and ~60,000 miles), each time with different dtc codes. Camshaft positioning sensor failed, triggering p0024 (“timing advanced and bouncing around”). Timing chain tensioner spring failed, requiring re-timing. Camshaft carrier case gasket experienced a major oil leak at 59,000 miles. Thermostat failed. Battery was replaced, but no diagnostic testing was performed—only code clearing. At 82,000 miles: torque converter has failed, transmission fluid is tarnished, and the radiator is leaking internally. Yes, the vehicle is available for inspection upon request and has been registered as non-operational. How was your safety or the safety of others put at risk? the vehicle exhibited repeated hesitation, delays when accelerating, and revving while braking. In stop-and-go traffic, it now sputters as if it may stall. These behaviors create unsafe driving conditions, especially at intersections and in congested areas, putting both myself and other drivers at risk. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. The torque converter failure and transmission issues were confirmed by national transmission in long beach, CA. Prior component failures were confirmed by martin Chevrolet, who performed both camshaft actuator solenoid valve replacements under warranty. Multiple dtc codes were recorded and cleared, but no electrical testing was performed. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? the vehicle has been serviced by authorized gm dealerships, but gm did not escalate the issue to their tac (technical assistance center) or assign a field engineer, in violation of gm's internal escalation policy. No inspections.

The contact owns a 2020 Chevrolet trailblazer. The contact stated while driving approximately 30 mph, there was an abnormal noise coming from the vehicle. In addition, the check engine warning light was illuminated, and the vehicle failed to operate. The vehicle was towed to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 15,000.

In 2 occasions my vehicle came to a complete stop and turned off on me. I was thinking it was a safety feature but after the 2nd time I was concerned. Took it to dealership and they found nothing wrong with it. On another occasion I was leaving my house when my steering wheel got super hard and made it very difficult for me to turn the wheel. Took it to dealership and they found nothing wrong, according to them truck was perfectly fine.