Chevrolet dealer wanted $1100 to replace the entire reservoir. I replaced the $20 sensor and saved a bunch of money. Thank you for making this video.
@utjay2008
3 ай бұрын
Great to hear!
@dakotacabo5363
Жыл бұрын
On my 2014 Volt, 70k miles, I got the Service High Voltage Charging System error and Check Engine light. Another video suggested checking the Coolant Level in the tank THIS video refers to. Its a Two part tank with two reservoirs. The Left hand side of tank was less than 1/2 full, added 50/50 Dex Coolant from NAPA, then a friend used his obd2 device to CLEAR the codes. That totally fixed my Volt...it now charges up fully and no more Check Engine or Service High Voltage Charging System errors......for now!
@juanrod247
11 ай бұрын
Has the issue returned?
@bakerskater846
8 ай бұрын
Do you know or could you ask what OBD2 device your friend had used to clear the codes? you would be saving a lot of time and money for people.
@mwalsh5757
25 күн бұрын
@@bakerskater846The HF 98614 from around 10 years ago works like a charm.
@lucidbounce
10 ай бұрын
Tip: use a small flat screwdriver wedge out the sensor. You'd push the flat end of the screwdriver in between the sensor (opposite side of that yellow dot) and the sensor slot wall to get it out. got mine out in 3 mins. Thanks for the video!
@markr385
2 жыл бұрын
Just changed the sensor. Not easy without watching this first. Great explanation. Thank You.
@utjay2008
2 жыл бұрын
Awesome to hear! Thanks for watching and good luck with the Volt!
@utjay2008
2 жыл бұрын
@@javierarellano2853 that’s the one! Good luck and thanks for watching! It available a lot of places, just search GM 22922224.
@markaruski
3 ай бұрын
@@utjay2008 Good info! Thank you so much for part number and your video! Thanks fellow Volt owner!
@bradhaitsma
Жыл бұрын
Just swapped mine out....working upside down, blind, and backwards became MUCH easier once I could see your example! THANKS!!!
@utjay2008
Жыл бұрын
Awesome to hear! Glad it helped!
@stevelamasney
2 жыл бұрын
Thank you so much for this video. I didn't know about the magnet and it fixed my problem after filling it. saved me a ton in dealer cost.
@bakerskater846
8 ай бұрын
did the code have to be reset for your car to charge?
@kolbyke
2 жыл бұрын
Just switched this out and it was super easy thanks to your video! Thanks!
@Rusty1220
Жыл бұрын
Thank you for making this video. My 2013 Volt has that error code now. I am going to try this tomorrow on my car.
@utjay2008
Жыл бұрын
I’m glad to help. Although I only show what causes the code and how to change the sensor in this video. My other videos show how to clear the code. Just want to be clear.
@linzeng6523
2 жыл бұрын
My 2015 volt had the same message pretty much on daily basis. I recently called around and found a dealer that simply did a software update, per GM bulletin 21-NA-224, and the problem is gone. I was lucky because the sales rep had the same car and was very helpful. I’ll update if the problem returns.
@Noitcetorp1234
2 жыл бұрын
Thanks for the info. Do you need to flush the battery coolant besides the software update?
@danwat1234
Жыл бұрын
@@Noitcetorp1234 there is no sensor that reads cleanliness of fluid in this car.
@Noitcetorp1234
Жыл бұрын
@@danwat1234 I was under the impression that there is a sensor which measures the resistivity of the fluid. As the fluid gets older , the resistivity gets lower.
@utjay2008
Жыл бұрын
The car is constantly measuring high voltage isolation in kOhms. It’s a very high number. But yes I believe that coolant health is a big factor in that number.
@danwat1234
Жыл бұрын
@@utjay2008 My understanding is if the high-voltage system is in perfect working order, i believe there should be no leakage of power no matter how conductive the fluid is. So having loss-of-isolation error code is from a combination of conductivity of fluid and power leakage, but not a dedicated sensor to detect dirty fluid. Also there may have been a software update than lessened the sensitivity to throw that code.
@misteeruiz6902
2 жыл бұрын
Thanks. I’m trying this when I get home.
@MintTea2023
11 ай бұрын
Thanks for the tutorial, just replaced mine, now going to wait til the CEL comes back on then take it to a local indi shop that can reset permanent codes
@MintTea2023
11 ай бұрын
For anyone wondering, to remove old sensor, it slides forward towards the Chevy logo Then I unplug the old sensor, insert the new sensor, that way I don’t accidentally drop the new sensor, took a minute or two to slide in place
@hotrodband-
2 жыл бұрын
Thank you so much for making this video.
@utjay2008
2 жыл бұрын
No problem! Thanks for watching!
@LoveMyRottweiler1
Жыл бұрын
Great Video...I have a 2015 Chevy Volt, in October 2020 I got the SHVCS error message, turned out that my coolant level was low, so I added Dex-Cool 50/50 coolant and cleared the error message with Actron CP9125 PocketScan Code Reader and presto like magic all was good to go...until today 8-1-23 I got the same SHVCS error message, however this time the coolant level was where is should be. Sounds like the same problem you talked about in your video. Would you recommend changing out the sensor?
@stoneyd63
2 жыл бұрын
In my scanner I believe this is the "Hybrid/EV Battery Pack Coolant Level Switch". I just replaced my coolant level sensor and it is reading 3.55 V. Silly me I didn't think to get the before reading, but I had the "P1FFF-00 System Isolation / Coolant Level Sensor Fault - Hybrid/EV Battery Charging System Disabled" and "P1FFD-00 Hybrid/EV Battery Pack Coolant Level Sensor Circuit High Voltage" codes. 3.55 volts should be good.
@utjay2008
2 жыл бұрын
Good info! Thanks for sharing for the rest of us!
@humblecourageous3919
Жыл бұрын
We were driving our 2017 Volt in the desert yesterday (March 31, 2023 Southern California). The outside temperature was about 76. My husband was driving fast on an empty road. When we stopped and turned the car off, it turned off but the engine kept running. I checked the coolant temperature and it was 255 degrees. The car did this once before when I drove about 70 miles in the city on the freeway. I'm assuming it stays on to continue cooling the engine. I didn't notice a coolant message yesterday. After a brief stop, when I started driving, the outside temperature dropped to 60 degrees or less and the coolant temperature was 175. There is a way to see the coolant temperature on the dashboard while driving. My question is, at what point is the coolant temperature too hot even without a message and when should you pull over and let it cool off? I love this car. I didn't need to put gas in it for 5 months. I made it use gas because I figured it was getting too old. Sometimes the car will do that on its own. Thank you.
@elNenio
6 ай бұрын
Sometimes not always the case.. on Land rover the floater inside just stop floating.. but i guess gm is notorious just for the sensor
@paulsanders1212
Жыл бұрын
I just went through a $500 repair to have the tank replaced because of a bad sensor... 86 miles later getting the same High Voltage charging system error message... now they want 47200 for hybrid battery. Not sure I even trust the dealers diagnosis.
@gsabic
Жыл бұрын
DONT TRUST THEM, THEY ARE DISHONEST OR DUMB
@loungelizard836
2 жыл бұрын
Hard to believe this part could actually fail. What did they make it out of, butter?
@utjay2008
2 жыл бұрын
I think most of the failures are either wiring or software.
@smitastic7030
13 күн бұрын
I tried this fix and others for service high voltage system and none worked. I had to go to the the dealer for them to reprogram two different modules and the codes have been off for over 6 months.
@utjay2008
12 күн бұрын
This isn’t a “fix” for the code. I have 2 other videos on how to clear the codes. This is just an explanation on where the sensor is, how to switch it, and what the part numbers are.
@rccrashed
22 күн бұрын
Thank you for posting this video, it made changing the sensor out much less challenging! Just seeing the holding clip helps a lot. A side note unhook the 12 volt battery before changing the sensor, or you get a warning propulsion system operating at reduced output, and the gas motor runs all the time. Easy fix though, I just unhooked the battery for a minute and everything is working again! $21 for the sensor at my Chevy dealer. GM#22922224
@tommytinker
3 ай бұрын
Chevrolet recommends that battery pack coolant level should be to bottom of black sticker.
@alfonsomaurogonzalez9336
3 ай бұрын
Might this solve P0128 Engine Coolant Temperature as well?
@MakeMyJay
2 жыл бұрын
Great video! Now can you make one addressing code P1f58? Thanks!
@CptAmazing
11 ай бұрын
Did you fix yours? My light is on. Gonna try swapping the valve.
@rogerberning1912
2 жыл бұрын
Thanks for the video. Would removing the float magnet also solve the problem? How long would it take to change the sensor?
@utjay2008
2 жыл бұрын
Possible. But if the magnet IS coming close to the sensor, then you have a problem that you want to know about. Most SHVCS errors occur because there is some sort of sensor issue, wiring issue, etc that causes a false error. I’ve never heard of a magnet falling inadvertently but I suppose anything is possible.
@nevada920
3 ай бұрын
I replace the sensor only and the engine light came back on same code
@tri9398
2 жыл бұрын
Wonder what would happen if you left the sensor detached from the tank so the magnet could never interrupt.
@utjay2008
2 жыл бұрын
I’ve thought about this. I think the false positives from a magnet would be rare. I would BET that most failures are from sensor failures or wiring failures.
@danwat1234
Жыл бұрын
There is also a defeat plug you can get that has a resistor to trick the computer into thinking the tank is full
@millennialmortgage2590
2 жыл бұрын
Where could I find what voltage the wiring should be at. I know you said you used to know the numbers.
@utjay2008
2 жыл бұрын
I’m not sure the voltage ever really changes. I think it’s +12V on one side. I can’t recall where I even found the impedance ratings of the sensor.
@utjay2008
2 жыл бұрын
I’ll take a look and reply later. I may make a follow up video to this one with a deeper look at voltages and ohms and some test stuff. I honestly didn’t expect many people to watch this one! Lol.
@zubeirkhan8034
2 жыл бұрын
Can you post the video were you replaced that. I have the same exact light on my 2014 Chevy volt " SERVICE HIGH VOLTAGE CHARGING SYSTEM"
@utjay2008
2 жыл бұрын
Replaced the sensor in the car? I don’t think I’ve made one. This video probably shows it pretty well though. I’d check around KZitem and see if any other videos pop up.
@АндрейКарташ-ч4б
2 жыл бұрын
Супер видео!!! Все очень хорошо рассказано!
@utjay2008
2 жыл бұрын
Thank you and thanks for watching!
@risknotdonot
2 жыл бұрын
Thanks for the video , I have a 2011 and I had this once and it did not allow me to start, added fluid , can’t remember if I used a tool or simply reset by pulling the 12 v battery cables, but if it happens again I have a better idea of the issue.
@utjay2008
2 жыл бұрын
@@risknotdonot I put together a pair of videos of how to reset the error. It’s a latched code that needs reset within the HPCM2 module.
@whocaresaboutme29
2 жыл бұрын
Nice video
@utjay2008
2 жыл бұрын
Thanks!
@tompeck7940
2 жыл бұрын
Thanks a lot for the video. Will the SVHC code clear itself when the problem is corrected? If not, will I need to get a scan tool that can do it?
@utjay2008
2 жыл бұрын
To my knowledge you’ll need a tool. I use a VCX nano.
@utjay2008
2 жыл бұрын
@Dimetri777 if your scanner can erase the code, but it comes right back, then it’s most likely the sensor or wiring, possibly the software. The VCX Nano is about $120, and the SPS2 / Techline Connect subscription is $40/2yr. The VCX Nano is the device that connects the SPS2/TLC software on your laptop to your car/OBD2 port.
@utjay2008
2 жыл бұрын
@Dimetri777 here is the video I have on how to rewrite the HPCM2 software (same basic idea for the BECM software too). Using Techline Connect and a VCX Nano to fix Chevy Volt Service High Voltage Charging System Error kzitem.info/news/bejne/xrCXk41pqIefhmk
@utjay2008
2 жыл бұрын
@Dimetri777 did you test the sensor with and without a magnet to switch resistance?
@utjay2008
2 жыл бұрын
@Dimetri777 that’s wild! Sounds like the sensor is definitely working. Very strange. Sorry I can’t help much more. If I think of anything I’ll post back. I guess it just needs a software update. If it’s a 2012 then check the wiring just behind the radiator. Keep us posted! Your comments will surely help someone else - which is why we’re all here!
@j.t.5180
2 жыл бұрын
What are the flexible black plastic tubes coming from both sides of coolant reservoir? Mine somehow were chewed or ripped in half not sure how
@utjay2008
2 жыл бұрын
The ones on the video I think are protective for shipping only. Emphasis on I think.
@j.t.5180
2 жыл бұрын
Not those…. the long tubes you keep moving out the way in video they plug in next to the black caps where you add coolant
@j.t.5180
2 жыл бұрын
Thank you for reply by the way
@j.t.5180
2 жыл бұрын
When you picked up the coolant reservoir to show inside it is hanging from top
@utjay2008
2 жыл бұрын
Ah ok. Makes sense. I can’t go look at it right now. I think they are overflow tubes.
@clay125
11 ай бұрын
Do you think this could cause a p0c14 and 15 code?
@langcael1527
2 жыл бұрын
Curious to know where the wiring was messed up for that connector? Replaced my sensor recently, but the code is still intermittently returning.
@utjay2008
2 жыл бұрын
Have the 12v battery tested first. But the wiring split is very near where I pointed in the video. That’s the problem area. Just follow that silver loom down another 6” or so.
@dennyb3896
Жыл бұрын
That you Brian? 😊
@zubeirkhan8034
2 жыл бұрын
What fluid do I put in there. The left side one with the little lock on it
@utjay2008
2 жыл бұрын
Use only dexcool premix (preferably from a dealer as it will be deionized).
@johnmiranda2307
2 жыл бұрын
I replaced the sensor and the fluid level is normal. Now what?
@utjay2008
2 жыл бұрын
If the SHVCS error is still present you’ll need to clear the code in the HPCM2 module. Or program it with the latest software.
@danwat1234
Жыл бұрын
Can just clear the code with a basic ELM327 dongle and a code clearer app such as Carista
@edwincolon9147
2 жыл бұрын
Hi I've been trying to replace the sensor without having to pull out the whole tank. It seems in your video that it only comes out pulling towards you and the tank is attached on that side. So do I need to remove the tank in order to replace the sensor?
@utjay2008
2 жыл бұрын
Hi, you can replace the sensor without removing the tank. You have to feel it, but you can slide it (forward or back - I can’t recall) after pushing the release.
@SpoonerJoe
3 ай бұрын
It slides toward the front of the car.
@tompeck7940
2 жыл бұрын
I have a 2013 Volt. Looks like yours is older too. I went to order part number 22922224 but the site said it wouldn't fit a 2013 Volt but would work for model years beginning in 2014. Do you think that's right? Thanks again.
@utjay2008
2 жыл бұрын
That’s really weird! Mines a 2012 and worked fine. I see a lot of the websites list it as 2014+. I’m not sure what I’d recommend. If it were me I’d buy it, but either way good luck!
@tompeck7940
2 жыл бұрын
Make sense. Thanks a lot!
@drumcorpsfan
Жыл бұрын
Is this the same for a 2014????
@utjay2008
Жыл бұрын
Sorry just saw this comment - I believe it is. The wiring is better though.
@drumcorpsfan
Жыл бұрын
@@utjay2008 Im going to try and replace the sensor blind. Which way does it come out if I'm looking at the engine? Does it pull out away from the tank towards the engine or towards the grill??
@utjay2008
Жыл бұрын
@@drumcorpsfan going by memory and I could be wrong… but I think it pulls towards the grill.
@Ashtonscreative
2 жыл бұрын
Is it possible that the magnet could get stuck in the position of continuing that error? If so how could we fix that?
@utjay2008
2 жыл бұрын
Anything’s possible, but I doubt that would happen. If it did, you just need a new tank. I think that would be the easiest sure fix for it.
@Ashtonscreative
2 жыл бұрын
@@utjay2008 one more thing. I haven’t tried to clear the HPCM2 code yet. How much do you assume(ballpark) that might cost me at the dealership?
@utjay2008
2 жыл бұрын
@@Ashtonscreative anyones guess. I would say $200-400. They’re going to reprogram the module I’m guessing.
@Ashtonscreative
2 жыл бұрын
@@utjay2008 daammmiittt
@utjay2008
2 жыл бұрын
@@Ashtonscreative I’ve got a few videos on how to clear the code or reprogram the HPCM2 module.
@excisioner
3 ай бұрын
My 2012 volt, 309k miles currently has had this code on for a year now, and I tried to diagnose it but the sensor is good and connector gets its 5v reference voltage, on top of all that I tried to get it reprogrammed and it's still not clearing the code anyone know what I should check next or what part of the system could cause this issue
@CJLienert
3 ай бұрын
Could be the float in the tank doesn't float any longer meaning the magnet is sitting on the bottom of the tank
@utjay2008
3 ай бұрын
You could try to remove the sensor from the tank, but leave it connected. Then clear the code. If the code comes back, it’s most likely a bad sensor.
@AustinWilhite
Жыл бұрын
Level sensor part number: GM 22922224
@georgemartin1436
Жыл бұрын
A helpful video on YOOTUBE? Awesome I just got the sensor and was wondering how the faq to change it! Thanks!
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