Electrical System Problems of Chevrolet Trailblazer - part 1

While driving, a service warning came on that reads "service power steering" - when that came on, the brakes ceased to work properly and required significant force, causing a big delay in braking. It is not safe to drive due to the limited braking. This mirrors the recall situation for other 2021 Trailblazer models with the interrupted brake sensor.

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When I shift my vehicle into park and hit the button to shut it off, a "shift to park" message appears on the dic screen. I then am required to start my vehicle again, shift into gear, and then put it back into park and attempt to shut the vehicle off again. It has taken me up to 15 minutes to be able to get it to recognize that my vehicle is in park and for the message to not pop up. If I get out of the car while the message is still on the dic screen, I cannot lock my vehicle and it drains the battery. I contacted my local Chevrolet dealer and they are saying that although this is a known issue which has had more than one gm service bulletin on this issue which includes my year and model, there is not an actual recall for this, so I have to pay out of pocket, because my bumper to bumper warranty expired at 36,000 miles and I am currently just shy of 39,000 miles. Of note, there is also a class action lawsuit for this exact issue so I am confused as to why a recall would not have been issued, or why it would not still be covered despite the expired bumper to bumper warranty.

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My vehicle displayed a shift to park message even though I was already in park. I could not turn off the engine, I could not lock my car. I had to go back into drive and then park mode and wiggle the shifter multiple times to get it to recognize park and turn off the car. This is now happening almost every time I drive the car. I did an internet search to see how to rectify the problem only to find that this exact issue has plagued gm vehicles for a decade and they still have not chosen to rectify the faulty part. There have been multiple recalls and class action lawsuits for the shift to park fault but not for my vehicle year yet! there are many Trailblazer owners who are experiencing this exact issue (on online forums) and gm so far is refusing to take responsibility and issue a recall to fix the issue for owners and also to stop using this faulty system in their cars. I have reached out to gm about this multiple times the past few weeks and requested they pay for diagnostic and fix the problem because it is a common and known problem with gm vehicles but they want me to pay for it myself and the repair and then they may decide to help out - unacceptable in my opinion. To be honest there needs to be a recall now and gm needs to be forced to change the components in all new models to stop this happening in future models going forward. This problem can cause the car battery to drain, it can cause the vehicle to roll away if it’s not recognizing it’s in park. Thankfully that hasn’t happened to me but others have had this happen. Not being able to shut the engine off or lock my car is a problem. This is a safety issue that needs addressing. I have lots of messages and communication from general motors which I have attempted to attach the screenshots with the photo below but get an error message on the upload page.

I get a shift to park warning after putting the car into park. I’m not able to turn the car off, this has drained the battery and caused safety issues for me and my child.

My 2024 Chevrolet Trailblazer has two main issues. First, there is a constant squealing noise when braking. I reported this twice to the dealer — the first time they said it was just sand inside the wheel. The noise continued. On the second visit, they told me it would cost over $100 to inspect the brakes because the wheel needed to be removed, which I couldn’t afford. This problem started before the vehicle reached 36,000 miles. Second, the electrical system malfunctions occasionally while driving. When I connect my son’s phone to bluetooth, both the dashboard and infotainment screens shut off completely for a few seconds. This happens while the vehicle is in motion, and it is extremely dangerous, especially on highways. The screens then turn back on. I believe both issues may relate to safety and should be investigated.

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Vehicle diagnostic summary – trouble codes explained 1. P0562 – system voltage low the vehicle’s electrical system is running at low voltage. This could be due to a weak battery, a failing alternator, or poor electrical connections. It may cause various electronic issues and unexpected shutdowns if not fixed. 2. P1005 – fuel level sensor control module: too many resets the fuel level sensor module has been reset too many times, likely due to electrical glitches. This may cause the fuel gauge to be inaccurate or unstable. 3. P14c0 / p14cd – fuel pump driver control module signal error there is a configuration signal error from the fuel pump control module. This could lead to fuel delivery problems, starting issues, or engine stalling if it worsens. 4. U0151 – lost communication with airbag control module (srs) the system lost contact with the airbag diagnostic module. This may affect airbag deployment during a crash, making it a serious safety concern.

Put vehicle into park, attempt to turn off car, get message shift to park after the vehicle is already in park. Vehicle keeps message shift to park not allowing car to fully turn off even though car is not started it keeps flashing message shift to park and system such as radio will not turn off as the car thinks it's not in park even though it already is.

The dash and radio have gone out while driving several times now. Was driving out of state on vacation and it has gone out on us over 9 times. We will be driving and the dash goes black. You can’t see your speed, gas or radio.

The vehicle began to display 'shift to park' on the display even after the vehicle was in the park position. This started periodically over a few days, but then became a regular occurrence within a week. At first this could be resolved by shifting back out of park and back into park, but that became less effective as time went on. The vehicle will not shutdown fully when this warning is displayed and therefore can cause a battery drain condition, which can result in a safety risk returning to a vehicle with a weak or dead battery. This occurred at 37 months of ownership with ~28,100 miles on the vehicle. In researching to understand the problem, I discovered that there are many instances of this same issue occurring at about the same time period, as well as there being several class action lawsuits on the identical issue, which shows that it isn't isolated. Further, the cost of this repair is a replacement of the shifter assembly at nearly $700 on a $24,000 vehicle less than 3 years old, because the failed inexpensive switch isn't repairable. Repair information is available, but the system isn't allowing for an upload of the files.

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While driving the car stalled and eventually stopped running. The battery was still on, but there was no power to the engine. The car needed to be pushed out of the road and towed to the dealership for work.

My vehicle keeps flashing: "shift to park" when I am in park and then my car is unable to shut off the battery even though I'm in park and our of the vehicle.

Blank instrument panel while [xxx] is driving. This is not safe for my son. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The vehicle was started with the key fob. The vehicle was then driven for 12 miles without a key within the vehicle. I had to bring the key to where the vehicle was located to lock the car and be able to drive it. This has not been inspected.

The contact's wife owns a 2022 Chevrolet Trailblazer. The contact stated that the front driver's side and passenger's side doors failed to lock as needed while pressing the lock button on the key fob or the lock button located on the exterior of the doors. Additionally, the contact stated that upon parking and attempting to turn off the vehicle, the message "shift lever to park" was displayed. The contact stated that after shifting out of park(p) and shifting back to park(p) several times, the vehicle responded as needed. The vehicle was taken to the dealer, where an unknown diagnosis was made. The dealer informed the contact that the vehicle would be repaired at the contact's expense because the warranty had expired. 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 approximately 45,000.

While driving the car will cut off and on real quick. The headlights will flash on their own. Security systems cuts off and the brakes function messes up.

I am writing to formally express my frustration and disappointment regarding ongoing issues with my vehicle, which I purchased new on [xxx]. Despite repeated efforts to address these concerns with authorized dealers, I have been unable to achieve a resolution. My vehicle currently has 13,630 miles and remains under warranty. However, I feel my concerns are not being taken seriously, and the vehicle's persistent issues are being overlooked or dismissed. Background of the issue: for over a month, I have been reporting significant electrical problems and other malfunctions with my vehicle. Each authorized dealer I approached assured me that nothing was wrong. To verify these claims, I sought a third-party diagnostic evaluation, which revealed two specific error codes—clear evidence of underlying issues. Details of dealer appointments: appointment: November 25-26, 2024 I entrusted my vehicle to [dealer name], where it was kept for two days. Despite this, no diagnostic efforts or repairs were conducted, as confirmed by the service advisor, erica jones. Frustrated by the lack of action, I retrieved my vehicle on November 26, 2024. Second appointment: December 2, 2024: I scheduled another appointment with the same dealer and dropped off my vehicle on December 1, 2024. To my dismay, the paperwork I received at the conclusion of this visit contained several discrepancies: the entry date was listed as November 25, 2024, with a promised completion date of December 2, 2024. This is incorrect, as I had my vehicle from November 26 to December 1, 2024. The mileage recorded at drop-off was less than the actual mileage on the vehicle at that time. The report stated that only one mile was driven during the diagnostic process, which is insufficient for evaluating my concerns thoroughly. Issues reported: I have consistently reported the following problems with my vehicle: seatbelt malfunction: the seatbelts fail to secure me during sudden braking situations,etc. . . Information redacted pursuant to the freedom of information act (foi.

I have had this vehicle at the garage for the 4th time in 2 months for the same issues. It would not start. The fuse box keeps blowing. The starter was replaced and the alternator was replaced and the fuse box 3 times so far. It is in the auto repair shop now for the same issues. The mechanic has done an inspection and diagnostics and cant find what is wrong. There were no warning lights to warn me of anything. I have spent 4500+ so far in repairs and more to come.

When I place my car in park, a "shift to park" message appears on the dashboard. I am unable to fully turn my car off and the car will ding at me. I have tried driving around the parking lot, pushing the shifter from side to side and into another gear then park again, going forward and backward, but the problem still exists. It started to occur more frequently, until it occurred every time I drove the car. I'm not sure if the car is actually in park, so when I finally get it to turn off, I place the emergency brake on. I can not physically turn the car off when this message appears on the dashboard. I took the vehicle to the service center of the dealer on 11/12/2024. I was told this has been a big problem with gm cars and they have had many cars coming in with the same problem. Currently the part is on backorder, and there is not an eta as to when it will be available due to high demand for this part.

On [xxx] I shifted my 2021 chevy Trailblazer to park and and was unable to shut off the vehicle. When I shifted it to park it kept displaying an error "shift to park" on the dashboard, but the shifter knob was correctly in park. I attempted to press the power button to turn off the car and it wouldnt do anything but beep. I tried multiple times to shift to park to get the car to recognize it was actually in park and turn off the vehicle but I was unable to do so. I was frantic and panicked to find I could not turn off my vehicle as I park on a apartment complex lot. That day I took the car to henna Chevrolet in austin TX for repair. They said the part was on backorder from gm with no eta. It is now November 1st and there is still no eta on when I will get the part for my car from gm. This has been going on for 3 weeks now with no end. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My daughter was stopped at a stoplight and the auto-stop engaged. The light turned green and she began to accelerate when all of the error lights on the dash lit up, then the dash info system and infotainment system went out followed by the engine turning off and not restarting. While all of this happened, the vehicle behind me struck my daughter’s car. Luckily it was at a low rate of speed and no one was injured. I took the car to the dealer and after nearly a week of testing they found nothing wrong and found no error codes in the system. They ere not able to replicate the problem. However, once we got the vehicle back a similar instance happed again, except just the dash info system and infotainment system went out and the car was still drivable. Once restarted the electronics came back on as normal. It has not happened again at this point. Had the first incident happened at a higher rate of speed a severe injury or fatality could have occurred.

2021 chevy Trailblazer when I go to park my car, there is a constant error of 'shift to park'. The car is already in park. I must wiggle the shifting knob, restart my car, or drive around before my car will turn off and recognize that it is in park. My safety is compromised each time I get in the car. If the car cannot recognize it is in park, what happens when it can't recognize it is in drive as I am on the road? or reverse? or any gear? my safety is also affected because my car does not realize it is in park, and at times I cannot exit my car. I am highly concerned that the car does not truly know which gear it is in and it compromises not only my safety, but the safety of my family/other passengers, and other drivers on the road. The problem is a known problem and there is an active fix bulletin for the problem. Gm cannot get the part in stock - it has been 5 weeks. It affects not only my year, make, and model, but many others too. Gm continues to sell the cars with this known safety defect. This defect has been confirmed by the dealership, and gm has sent out a known fix for the issue (TSB pit5616a). There is also a class action lawsuit for this specific issue with gm. Gm's solution to me is to trade in my car for a newer model rather than waiting for the part. In addition, many cars of my year, make, and model require a whole new transmission, but gm will only replace the shifter harness to start with, if and when they receive the part. I was told that the part could take up to six months to receive. For an issue that has been happening since at least 2019, this is unacceptable. The only warning that I receive is when I am trying to shut off my car and it will not shut off due to this error. This has been happening to my car for 2 months, but there seems to be a history of this defect since at least 2019.

I was driving my 1 week old vehicle, on a city street, foot still on the gas, and the vehicle completely shut down; no power at all. It wasn't the auto start/stop technology, but rather a complete power down. No lights, no hazard lights, no dash, nothing worked. The car came to an abrupt stop. The gear shift could not be moved into neutral, nothing. Luckily I was on a city street with not a lot of traffic. If I had been on a highway it could have caused a serious accident; if I had been driving across railroad tracks and it stops - very dangerous. I was able to contact aaa, and after a "jump", it started. However, because of my proximity to the highway, I opted to have it towed to the dealer where I bought it. . . . They ran service on it and can find nothing wrong with it. . . As you can imagine, I am nervous to drive on the highway (which I do 5 days a week normally). . .

This is an update for complaint # 11619009 after doing some online research and discussing with the service manager at my dealership, we identified a simple issue- apparently there was a problem with the torque used in connecting the ground wire for the electrical auto start-stop feature, which is what cause my vehicle to completely die and not be able to be restarted. After it was identified, it was corrected within minutes. I highly recommend that there be a service bulletin for any purchasers/lessees of the new 2024 Trailblazer (and possibly other chevy vehicles) to have the grounding issue checked.

See prior report 11603493 on 7/19/2024. [xxx] engine. Light on -stabiltrak stability - control system requires your attention now. Cernohous Chevrolet "repaired". Then [xxx] engine light on again. Cernohous Chevrolet" repaired. " [xxx] engine light on for the 3rd time. They have had my 2024 Trailblazer since [xxx]. It might be a wiring issue or switch needs replaced per ron murphy and jack. I am concerned this vehicle purchased new - cash- is a lemon. Other than yes the engine light is on - no one can tell me the meaning and correct it. How serious - dangerous to drive ??? cernohous Chevrolet prescott WI information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

For about a month now my vehicle is telling me to put it in park when it is already in park. Have to restart multiple times and go through all the gears put it back in park turn it off and still get the "shift to park" error. It does not happen every time I use my vehicle, but it happens so much I am unsure if it is safe to use. Even though it shows it is in park I wonder is it really? I have called the dealer where I purchased it for them to look at it and they will not even schedule an appointment because they say the parts are on back order and they have no idea when they will get them. This is the first brand new car I have purchased and after having a lot of secondhand vehicles I went back to chevy. I am very disappointed in chevy it only has 23000 miles on it, and they are not doing anything to fix this, I would not recommend chevy/GMC to anyone.

After placing the vehicle in park I get the “shift to park error”. I can’t leave the vehicle, or lock it. It can take any where from 5 to thirty minutes for it to actually read the shift. My car is now not reading my key 80% percent of the time. The vehicle turns off while driving down the road. Saying no “remote detected”. The key has been locked in the car twice. Which should be impossible. I’ve been stranded outside of my vehicle at night in atlanta for long periods of time. Trying to get the vehicle to unlock because it is not reading the key.

When putting vehicle in park and turning the car off, getting message to place vehicle in park and car "dinging. " this started about 2 weeks ago and was intermittent, now it's every time I put the car in park and takes me about 5 minutes of turning the car on and off, placing in park before it finally registers the vehicle is in park.

The contact owns a 2022 Chevrolet Trailblazer. The contact stated that while attempting to park the vehicle, a "shift to park" message was displayed on the instrument panel while shifting the vehicle to park(p). After turning off the vehicle, the message continued to flash on the instrument panel with a warning chime coming from the vehicle. The dealer was notified of the failure and the contact was instructed to have a diagnostic test performed on the vehicle. The manufacturer was also notified of the failure and informed the contact that there were no recalls on the VIN. The contact was referred to the NHTSA hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 43,000.

Bought last year in November. Starting having "shift to park" alert when car was in fact, in park. Took me 5 minutes to successfully turn my car off. It happens intermittently and at first it was just one and done, now (after about a week) it's almost every time I park. It's very frustrating. I called the dealership and they can't get me in for 2 weeks. Unsure if they will be able to diagnose/fix the problem.

The contact owns a 2023 Chevrolet trail blazer. The contact stated that while operating the vehicle, the back-up camera image remained displayed in all gear shifter positions. The contact was concerned that safety warning information and messages were not available for viewing while the failure was present. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 17,938.

I was driving and the vehicle cluster display and radio went out. I was unable to see how fast I was going and any system info. It eventually came back on. During this time the car was continuing to drive but unable to see any lane - blindspot warning or speed or system controls or warning events.

05/29/24 I took this vehicle to cronic Chevrolet in griffin, GA due to check engine light being on. Code detected purge pump it was still under warranty at that time only had 43,906 miles on had to get the purge pump replaced. Several weeks after getting it back I kept getting a shift to park message come up when trying to put it in park then started having trouble getting it to go into drive. I have had so many close calls from people almost bashing into me because my car will not go into drive and you constantly have to switch in and out of gears for it to finally go in. Its sucking the had right out due to it not shifting gears properly. The code reader detected transmission control module which I find to be faulty and understand there are serval recalls on this specific vehicle , when it started this issue it didn’t even have 50,000 miles on it!.

I first noticed an issue about a year ago when an electrical blaring noise was coming from my speakers followed by popping and crackling noises. I have taken my car into the dealership several times without resolution. Since then, I have noticed excessive humidity in the vehicle and recently found the trunk was flooded. I took the vehicle in to the dealership again, and they say the interior fabric is compromised now and the electrical sounds I was experiencing are coming from electrical damage inside the body. I have now read another review online from someone who had the exact same experience with this make and model. I believe this is a safety hazard to drivers who are unknowingly driving around for months in a vehicle that could be flooding and could cause severe damages like in my case. I have documents to support these claims, but I do not have electronic copies. If someone reaches out to me I can provide hard copies.

The contact owns a 2006 Chevrolet Trailblazer. The contact received notification of NHTSA campaign number: 13v248000 (electrical system, visibility). The contact stated that on several occasions while the vehicle was running or while driving at various speeds, the passenger's window switch was depressed from the driver's side door panel, and there was a clicking sound coming from the front passenger’s side of the vehicle, and the window failed to roll up or roll down. Additionally, the contact stated that on several occasions, when the driver's side window switch was depressed, the window failed to roll up or roll down. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown. Parts distribution disconnect.

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Malfunctioning door locks cause safety issues for drivers and passengers. If you do an internet search, you can find thousands of questions on this specific issue for Chevrolet door electronics. They are doing nothing to correct this isse.