Electrical System Problems of Chevrolet Blazer - part 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 to drive another 20 minutes or so to get home. After it rests for a few hours, it goes like normal. This is a big safety concern for me since these episodes happen every week when I fill up my car with gas. I have almost been hit from behind during these episodes and it is very scary and such a hassle to have to deal with this every week. I have already had several chevy dealers and mechanics work on this problem and it continues to act up like this. I have all the paperwork for the work that has been done. $15, 000 have already been spent on this problem and the problem still continues. Please help me. I like chevy vehicles and have always bought chevy but this is the second chevy vehicle that has given me problems when I gas up. Please look into this problem. My phone number [xxx] if you need to make contact with me by phone. Thank you [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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Driver steering assist reduce message in display. Upon scanning codes, error code p0128 triggered. Temperature gauge does not register on dial between c-h.

See all problems of the 2021 Chevrolet Blazer 🔎.

The contact owns a 2021 Chevrolet Blazer. The contact stated while driving 35 mph, the ambient air temperature was stuck on negative forty. The contact replaced the sensor. The vehicle went into ice/snow mode on several occasions and was not driving as designed. The air conditioner was blowing out hot air. Additionally, the vehicle was pulling to the right while driving. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who scanned the vehicle and determined that the sensor was operating as designed. The mechanic informed the contact that there was a loss of communication. The vehicle was taken to the local dealer, where it was diagnosed that the control arm needed to be replaced. The vehicle was repaired, but the failure recurred. The dealer informed the contact that there was no recall coverage on the vehicle. The manufacturer was contacted and referred the contact to the NHTSA hotline. The failure mileage was approximately 34,980.

Ac not working, temp gauge stuck at c, steering assist reduced happened a year ago, went away, came back. Would fix short term if battery was disconnected and reconnected or if code was cleared. Found lots of others with this same issue.

Thermostat failure. No a/c, no power steering, engine light on.

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The right side tail signal light module needs to be replaced. I was having intermittent issues with the right turn signal, I took the car to the dealership and they told me that the module needed to be replaced. The car has been in the dealership since March 19th, more than a month ago waiting for the part. I contacted Chevrolet and they keep telling me that no eta for part is available, and they do not provide any more details on what is causing this delay.

See all problems of the 2024 Chevrolet Blazer 🔎.

I just got off work, and when I start my vehicle, my infotainment screen that I use for gps and other features that are included in the safety of the car, and the screen just says, “update failed, return to dealer. ”. The service advisor at chevy says that this happens and that there is nothing they can do besides replace the entire radio, at a cost of $2000 with labor. I also researched the issue online and there are dedicated websites to this very issue with multiple year and models in the chevy lineup that uses the chevy mylink infotainment center. Which is in every vehicle they sell. So currently I’m unable to access any radio, gps, safety cameras around the vehicle, or any of my onstat emergency services that come with the vehicle due to an update that I never asked for, or even attempted to install. And for chevy to not replace the radio but instead recognize it’s a problem but still charging you to fix something that they know is defective.

On Saturday, March 8, 2025 I was crossing a busy intersection when my car shut off completely and accelerated into oncoming traffic almost causing a collision or fatality. My brakes locked and steering wheel locked. I had to put the emergency brake on in order for the car to come to a stop. We got out of the car in the middle of the street and ran for safety. Scariest experience I’ve ever been in especially with my family in the car!!.

I got home from work, locked my car up for the night with everything working perfectly fine, then came out to leave for work the next morning to find “update failed. Return to dealer” on the infotainment screen. I did some pretty extensive research trying to find the fix, only to find that many people are having this exact same issue in the same circumstances where their vehicle was fine when it was parked, they go to get back in and nothing with the infotainment works. According to my online research, gm/chevy is charging anywhere from $1500-2000 to fix. I contacted few different dealers to see if I would get the same price and I absolutely did. They said, “your car is no longer covered under any warranties so you will be fully responsible for the cost of the fix. ” I have no sound, no gps on my screen so now I have to use my phone for work navigation (talk about a safety hazard), my turn signal sounds don’t work, my talk to text doesn’t work, no more hands free calls. This is a huge safety issue and makes me wonder why there isn’t a recall yet. This is not normal wear and tear. This is a glitch in the gm programming that they should take responsibility for and fix before they lose a lot of business.

Vehicle is available upon request. 5/28/23 tires needed replaced, not even 30,000 miles on car. Customer was charged. 6/13/23 struts and mounts replaced at dealership 3/29/24-revs high when barely touching pedal. Turned car off and it started back up on its own. Happens at least once a week. Dealership was unable to recreate. 4/1/24- wheel bearing replaced, customer was charged. April 2024 black metal showing through white paint. Paint was thin and fading. Dealership repainted the 2 doors that had paint issues. 12/20/24- antifreeze level was at bottom of reservoir. Sloshing noise when driving. Was told air in hoses and will work it's way out. Was back at dealership 1/15/25, 1/24/25 & 2/5/25. Radiator fluid still dropping but even with dye test they can't figure out where it's going. Terrified it's going to effect the water pump and engine.

When I shift the car into park and turn it off I get a message that it isn’t in park though it is as displayed on the console. To clear the message I have to move the shifter back and forward several times. I’ve had it in the shop twice already but the problem continues to return. This should be a recall!!.

This is dash warning that came on saying "action required, steering assist is reduced, drive with care" on 2021 chevy Blazer, 28. 800 miles. First happened 1/15/25 & each time car is started it is on now, plus the check engine light is on now. The fan of the motor runs for 5-10 minutes once car is shut off also. I have read of the power steering locking totally up on other Blazers that this has happened on, making this a very big danger and risky. I am not sure if it is power steering, electrical, or engine issue, but believe with so many reports out there and it causing a danger to people driving, gm/Chevrolet should put a recall on this and look at these before people are killed (if not already due to this). I am taking mine to chevy dealer to have it looked at, but many people may not have that option.

Common issue, the steering assist is reduced and temp gauge is stuck on c. This either a thermostat or temp sensor issue.

My vehicle has been throwing an error code related to the thermostat. The temperature gauge will remain on c resulting in the fan running loudly, the air conditioner not cooling the cabin of the vehicle well, and a message displaying "steering assist is reduced drive with care". When I check the fluid levels everything is fine without issue. I'm very frustrated and want to get rid of my Blazer ASAP.

When the vehicle is in park and you try to turn it off with the start/stop button an on dash error code of ‘shift to park’ appears even though the vehicle is clearly in park. You are not able to turn the vehicle off. This currently is forcing me to restart the engine, put my car in reverse, shift back in drive, try re-parking and turning it off again, repeating the process until it eventually turns off. I do not know if my car is truly in gear or not. I’m afraid that it might cause a dangerous situation. Gm has already identified this recall for other vins of 2019 chevy Blazers I believe it should be extended to additional vins.

I recently stopped at a local store and put the car in park. A message appeared on the dash shift to park. I was not able to turn the car off and I had to move the gear shift back and forth until the message went off. I couldn't lock the car correctly by moving away from it. I used the key fob to eventually lock the the car. My concern is that if my wife is driving, she may not be able to lock or move the vehicle. This seems very unsafe. Should this be brought to the attention of the local Chevrolet dealer?.

Shift into park warning when turning vehicle off even though vehicle is in park.

With great frequency when I put my 2019 Chevrolet Blazer into park position I receive the error message to "put vehicle into park" when it is in fact in the park position after done driving. I've tried putting the car into drive again or reverse then back into park position or trying to turn the car off then back on and this does not clear the message. I am unable to turn the vehicle off completely until the message has cleared. The vehicle remains in auxiliary mode until the message has cleared which takes several attempts. This is a huge inconvenience!! my local Chevrolet service center has checked my VIN information and there are no active, repaired or expired recalls for my vehicle. This has been a long time issue with this type of vehicle according to the Blazer forum. Please issue recall for this issue ASAP!.

Upon driving my vehicle twice it shut off on the roadway once on an incline when a message of 2 keys detected and flashed on the dashboard prior to the vehicle shutting off. Vehicle would not restart until 15 minutes later it restarted but the dashboard kept flashing 2 keys detected. There was only one key in the vehicle at the time and the key fob has had the battery replaced upon the first incident which was on 11/14/2024 and the second incident was on 11/16/2024.

P0128, ac not working, steering assist reduced, and temp gauge not working. Problem caused by faulty ect wiring. First the problem is the ect is a two wire (signal + and -) 26 gauge wire running through the ignition coil wire harness. Ignition coil signals are very high voltage and fairly fast frequency which causes a lot of emi which is easily picked up on a 2 wire voltage based wire set. The ect wiring should have been a twisted shielded pair if running next to coil wiring or they could have used a single wire resistance thermistor, but they should have just routed the signal a different way to begin with. This is a design issue and it should be a recall. . . Maybe a class action lawsuit is needed to force them to fix it correctly. The fsb (field service bulletin) fix blames loose connector terminals and it patches the computer software to not include ect wire failures in the steering, ac, and temp gauge inhibit logic (overtemp readings will still fail off these functions). Also the p0128 code can come back occasionally.

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.

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 has a "driver assist reduced" message. It appeared randomly while driving and stayed on for multiple days. Vehicle had a code for a bad thermostat/coolant temp sensor and "driver assist reduced" message. The cause is not the temp sensor or thermostat and is actually a wiring harness that two wires need to be separated from the bunch. The frequency from one wire interferes with the coolant temp sensor wires. I am on several forums for chevy Blazers and there are tons of posts about this issue with the 3. 6 v6. Most people will go in and have these expensice parts replaced. It is not acceptable to have people get charged for a $800+ job when the part is not faulty.

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.

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?!.

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.

Steering assist reduced message comes on and temperature guage goes down to cold not working and after you shut car off fan runs full force for 10 minutes. Shows no check engine light or no codes.

Park to shift code displays, would be available for inspection. Problem has been confirmed by dealership-bill roberts chevy in bolivar, mo safety issues- not for sure if car is in park could roll off. Will run battery down. Safety issues with existing the vehicle. At some point could cause transmission failure. Problem started around [xxx] mileage on vehicle is 44,000 not under warrenty due to mileage the dealership states. Gm and dealership stated that my VIN# is not under the recall for the very same thing as on other VIN# with this same problem. There is a problem if my car is doing the same thing, it should be covered under the recall as well. It is a safeety issue that the company should cover. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

When placing the vehicle in the park position and attempting to shut the vehicle off with the push button my dic flashes a message stating to 'shift vehicle into park'. I have to move the shifter from park to another gear several times in order to keep this from appearing and allowing me to turn my vehicle off. I can take up to 5-6 times before I can get the vehicle to allow me to turn it off. I'm not really sure if it is or isn't in park even when I do this at that point. I have had this happen on multiple occasions over multiple months.

My 2019 Blazer won't shut off the electrical system because of a "shift to park" error. This causes a drain to the battery and could leave me stranded. The problem is simple electrical switch that is not making the connection to tell the car to shut off. This is a well documented problem with chevy vehicles in the late 2010s and includes multiple models. I have not had the problem verified by a Chevrolet dealer. I've reviewed multipe youtube videos that has had 10s of thousands of views which demonstrates the problem is very wide spread. Why is this not being recalled?.

When I am shifting my vehicle to park (gear shift in console area) and turn my vehicle off I will get an error code in my dashboard that I need to shift to park. My gear shift in the console is lite up p and my dashboard electronic system says p; but when I try to turn my car off it won't turn off and stays on again giving me the error code that need to shift to park. I then have to turn my car back on to then try and turn it off with the same error code coming on. I can try pushing the gear shift further with no success, shift to different gears back to park, and try waiting a few minutes after shifting to park before turning it off and still no success. This is a safety issue that my car is not really in park and will take off if I take my foot off the brake when this is all occurring. I at one point had to turn my vehicle on and back off with no success at least 5 times before I can finally get it to turn off. This problem has been confirmed by multiple Chevrolet dealerships with all of them saying they have seen many vehicles (same make and model with other models included) with this issue. Manufacturer knows about it.

When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it.

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.

When the vehicle is shifted into park the indicator on the dashboard and the on the console next to the shifter display 'p' but when ignition is turned off a warning on the dash shows shift into park. It is on the web with multiple complaints. This problem appears on other gm platforms.

Instrument cluster completely blacked out, providing no information on vehicle speed or status of operation. Operation of a vehicle without instrumentation would seem to be a safety risk. Chevy dealer diagnosed problem as ipc error u0155, installed updated software to correct the problem. The repair was not covered by the extended warranty I purchased through general motors when I bought the car. I think a defect such as this should be the manufacturers responsibility, I believe gm has a service bulletin out for this problem covering several models of their vehicles. This should be upgraded to a recall.

I cannot shut off my vehicle. When I turn off engine warning message and alert binging tells me to shift to park. The vehicle is in park but vehicle does not register that it’s in park. I’m stuck in vehicle which will not stop alerts and runs down battery. This is a hazardous situation. I can’t tell if car is actually engaged in park or not. This started happening intermittently over the last month but now it happens 8 times out of 10 when I try to shut off the vehicle.