2019 Chevrolet Blazer Steering Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2019 Chevrolet Blazer owners, lightly cleaned up (personal details are redacted by NHTSA).

My 2019 Blazer gave a Steering Assist warning on 2 Nov 2024. I was aware of a recall for other Blazers but for some reason my VIN was not among those recalled. I took it to the dealership on 6 Nov 2024. The dealership has determined that the issue is indeed the same issue with those other Blazers that have been recalled but refuses to include my car in the recall because the VIN number wasn't originally among that recall. I was told that the car needed anew temperature gage and that they would have to order it, however, the component was available outside of the dealership. I paid for the diagnostics and the part, being told that the light(s) would stay on, I would still be able to drive it and that I would receive a call when the part came in. …

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 potentially causing damage to the vehicle and a total loss of the vehicle entirely due to damage from the engine overheating. …

Initially received Stabilitrak dash warning when brakes were applied for longer than 30 seconds (ie., stop light) for several days with no SEL. Then, while driving along a secondary highway at approximately 60mph, all dash lights lit up, power steering failed, power brake assist failed, and vehicle started stumbling. Pulled to side of road and vehicle shut off. Performed restart and was able to complete drive home (approx 3 miles). Upon arrival and shutting off vehicle, all dash lights illuminated then shut off. Vehicle would not start after (no click, no turnover, indicating failed battery). Attempted to charge/maintain battery but battery charger indicated sulfated battery. Multimeter showd 7.5V. Replaced battery and car started normally but all computer functions were reset to factory defaults. …

The shift-to-park sensor in my 2019 Chevy Blazer RS is malfunctioning. After shifting into park, the vehicle does not detect that it is in park and displays a "Shift to Park" message. The issue is/has been ongoing and now it is almost impossible to bypass with wiggling the shifter. Safety Risk: The vehicle cannot be fully shut off or locked, increasing the risk of battery drain or unintended movement. This poses a safety risk if the vehicle is left in public or on an incline. Inspection History: The vehicle was taken in to the dealership in November/December 2025 due to MULTIPLE Warning Lights: "Shift to Park", "Steering Assist", "Stabilink" and the usb-C charging port under the radio screen will stop working all together when this happens as well. This started around September 2025 and has occurred regularly since.

The Blazer is having a recurring P0128 code. We have informed the dealership. This has been going on for 2 years or so. I reset the code with a code reader and it stays off for a few months usually. Tried to have the dealership look at it one of the last times it happened but they wouldn't just look at it...they wanted to set up an appointment. We needed the car so I reset the code again. Now it is time to get it fixed. I know it needs a thermostat and temperature sensor. The cost to install it will be close to $1000. This should not be at my cost. This is a know issue with the 3.6L engine and it affects the emissions of the vehicle along with many other parts of the engine. I am reaching out to see what can be done.

I looked online and a lot of Chevy products are having this issue. Something will pop up saying limited driving assistance then your cold hot gauge doesn't work is get stuck your air conditioning quits working your oil gauge quit working your battery how much voltage you have quits working it falls your whole window up where you can't see. This is an ongoing issue with most of GMC vehicles, especially blazers. This is a safety issue that could cause your car to blow up or your windows. The fog over where you can't see and you have a wreck and I could kill you.

My vehicle was diagnosed with a faulty thermostat, specifically that the thermostat was sticking and needs replaced. My vehicle is at approximately 59,150 miles as of 12/27/2023. Prior to the diagnosis of the faulty thermostat, I intermittently received a warning message "Steering assist reduced - drive with caution", the thermostatic fan would run at full speed, and the P0128 check engine code was illuminated. These symptoms began approximately at the beginning of December 2023. The problem was confirmed by a certified GM dealership service department.

Received repeated message on display " steering assist reduced, drive with care" Engine races at times and Auto Stop quicks working. Could lead to a crash if steering is restricted due to P0128 code was repeatedly triggered as a fault code. Turned out to be thermostat which is being replaced on thousands of these vehicles. You can search for the message. GM is replacing under powertrain warranty however many vehicles are beyond warranty. This is approximately a $1000 repair.

I keep getting this message that pops up, "Steering Assist reduced Drive with Care". At the same time this happens the temp gauge stays on cold, the ac quits working, the engine fan is on high, and most of the time I get code PO128. We have had it in to the dealer and they said the its the thermostat or the temp sensor. From what I am reading it could be a factory issue with the EMI issue from sensitive ECT circuitry. This has been an ongoing issue for us for over a year.

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.

Steering complaints in other Blazer years