Please read the step-by-step instructions and watch the video before attempting. Do not try to follow this video without reading the step-by-step instructions. The video is just meant to be used as a visual aid. Visit the GM-Volt Forum (link in description) for questions and support.

Confirming that these excellent instructions still work as of June 2024. Had to find a third-party download link for the vmware player (such as softpedia) since it looks like vmware is now part of broadcom and the download links no longer work properly. All subsequent steps are bang on. If TLC gives you a VIN slot error even though you've payed for a subscription, just close TLC and relaunch it (from the ACDelcotds website as per the instructions). Good luck all

I was able to fix my 2013 Volt using your guide. Dealership wanted to charge me 17K for a new battery. Thank you so much!!!

MR. WATERMELON, YOU ARE MY HERO. I often fast lane up the (2017) Volt up a big tall SoCal mountain on the morning commute. Sometimes (my theory) when I get my battery hot enough by the rapid discharge, the ICE turns on to preserve battery levels, keeping it cool. I pushed it a little too hard and got the dreaded p0afa p1e00 codes a couple morning ago. Figured it'd cool off after a couple hours and I could wipe the codes with my OBDII scanner. WRONG. Volt would turn on but absolutely no drivetrain engagement. Would let me shift only to tell me 'shift to park'. Ruh roh. Amazon overnighted a VCX Nano, used your guide, $45 sub fee and I avoided a costly tow to the dealership who warned me it'd take a week to look at it. THANK YOU THANK YOU THANK YOU!!!

Finally got my 2012 Volt reset. After filling the reservoir with coolant (it was a wee bit low) and I tried disconnecting the battery, recharging the 12v also, with no success. Had tried appointments with dealer but no one would take the car, 'too busy.' I showed my hometown mechanic your video, and he was able to reach the correct module to clear code. All with his expensive scan tool that he uses everyday. I don't think he hooked up to GM support. I don't think anything was 'reprogramed' but just codes cleared. I was shocked really. Service High Voltage Charging System error gone, CEL off. Just got this done 11-14-22 and the car began accepting an electrical charge from the plug. : ) Very grateful.

Thank you for posting this video. I have been trying to accomplish this off and on for a few months now. Using your video I finally was able to get these modules reprogrammed.

I found your write up on the Volt Forum. I am totally computer dumb, had no clue in the world as to what I was doing, but I followed your write up step by step and got it done today. I guess I will know for sure by tomorrow or my Monday commute, but so far so good. Thanks for taking the time to show us how to save some money!

Watermelon - thanks so much for taking the time to do the video and google doc. I would not have attempted this without your very thorough instructions. You saved me thousands of dollars. I was able to buy a used 2013 volt for half price because the dealer thought the battery was toast due to the Service High Voltage system warning and because the volt would no longer charge. I took a chance and bought the car, did some research on the forums and luckily came across your video and google doc. I spent the couple hundred dollars to buy the ACDelco subscription and VCX-NANO and a few hours later, the car was reprogramed and has run flawlessly for the past 2 months. No further warnings have come back, and the car charges fine every single time. I really do appreciate that you put this together. For people that are not sure whether to try it or not, I recommend you go for it. Follow the video and read the step by step instructions (I needed both together). It took me several hours (software downloads took a bit of time), and I was super nervous about reprogramming the car. I was worried I would brick it. But it all worked perfectly for me!

Huge thank you. Followed this for the car being stuck in service mode. Reprogrammed both modules and the ecu and it runs again

Thank you for that great video well done you just saved me a lot of time and money I wish everyone did video like this straight to the point and step-by-step. thank you again 💯💯💯

I am very very Grateful for the Video and the Instructions. I am not stupid but not into car Diagnostics. Without this it would have taken my weeks to figure it out and probably i would have to renew the license 20 times 🙂 THANK YOU from Germany.

Большое спасибо за информацию! Благодаря Вам и Вашей инструкции я смог перепрошить Вольт. Самому точно не разобраться, особенно когда не знаешь языка. Я очень признателен Вам за проделанный труд!

Used your pdf guide along with the video and fixed my daughters 2012 and my nephews 2014. Thanks for the help!

Just did this on my wife's 2015 Volt. Excellent guide! Thank you.

you should add your pay-pal for tips this is really helpful and appreciated.

Thank you so much for your video, it was very helpful and easy to follow. GM has updated their GUI it is slightly different now. Thanks again....

Wow. I just read through your instructions which sent me to this video. Awesome instructions. Very well said. I'm just looking into the possibilities. I just bought cherry 2012 with 40,000 miles. He said he was going up a hill when the battery was about to die he expected the engine to start but this time everything shut down and the dealer is no help. So he sold me the car.

Watermelon, thanks very much for posting this. I got it to work for my 2012 Chevy Volt after the Service High Voltage system warning went on and it didn't charge. A few notes to help others doing it: For me the latest VX Manager software version didn't work, but the 1.8.4 included on the thumb drive included with the VCX Nano did. Also, I thought I had failed to upload correctly after completing both module reprograms as you mention, but then after about 10 minutes it started to charge and all the dash warning went away. Also of note is that I inspected my coolant tank for leaks and found none but topped off the coolant to be sure it wasn't slightly low. It seems crazy to have to do this much work to reset the code rather than being able to do it over OBD, but seems to be the reality with this year for the Volts. Cheers!

WATERMELON!!!!!! It was tricky, but was able to do it! Thank you so much!

Thanks Watermelon! I was able to follow your guide and setup my VCX Nano and all the apps. Looking forward to this weekend when I can finally fix my SHVCS error and also a random P0AB9 DTC as well

I never post comments but your video was sooo helpful. Thanks!!

best guide on the internet! Thank you especially for which version of vx manager to use! :-)

Thanks for this in depth guide. 8 months ago I fixed my 2013 using an old windows 7 laptop. So when my daughter's 2011 got its first charging error this weekend, I was dismayed to learn that there was a new application from GM and the process was much different! Here's what happened for me: I had a ton of trouble getting my VCX-NANO to be recognized by two different desktop PC's that I hauled out to my garage. I can't say if that's because of the version of VX manager I was using or if it's because I updated the device firmware to 1.9.0. I spent hours working on this. I even went back and tried to create the virtual machine like your directions stated. In the end, I went back to my old windows laptop and was able to finally get the ECU flashed using Techline Connect. It took many tries -- the program wouldn't accept the VIN I purchased through ACDelco until 24 hours later -- but eventually I got it. So, while the instructions and video suggest a Windows 10 machine with 8 Gig, I was able to do it with a 12 year old laptop.

Thank you for the video and instructions. They were very helpful!

Thanks for doing this! I was meaning to do update some modules (mostly to disable the windows rolling down) but got the SHVCS message.

Your guide was so helpful! Thanks so much... 😄

Great tutorial and write up! Very very helpful!

i had my speedometer LCD go out, i am waiting for the dealer to replace it but its been over a year because of "supply chain". so i took matters in to my own hands and i bought a used one off ebay and now i just am showing dashes in my odometer and i can't change from normal, sport or mountain mode. The service manual says to reprogram the BCM using sps2. Is this the process for that? Thanks in advance!

Is it necessary to add the pass-thru for the vx nano in addition to the GM diagnostic? When i plug in the vcx nano it doesn’t come up when i click “connect to vehicle” in techline.

Hello, This is a really helpful video. I have done everything correctly till step 12 but after selecting BECM, there is an error showing "issue retrieving VIN slot status" Or VIN subscription is null. Please, I am in dire need of an advice.

Do I have to everything from scratch to resolve the issue second time? Also, warranty claim code error is popping up after I start reprogramming (the last step).😞😞😞

To update the blocks, do I need to install a virtual machine like in this video or can I go straight to step #7?

Thanks mate! Works like a charm.

Great video and tutorial!!! Thanks bro ........

Hello! I live in Europe and I have an Opel Ampera. Do you think I could use a VPN or it only works for the chevy Volt? Thanks for the great video!

I’ve got the Vcx nano working on my Windows 10 pro, problem is, some things seem sluggish. So I’m going to reinstall Win10pro completely, then reinstall Win, and follow you virtual drive method. Cheers for the excellent play by play instructs. The Vid is blurry for me, so hopefully I can follow the textual steps and bullets. :) Thanks gain, it takes time to do all this and we really appreciate it!

Thanks so much for making this! I'm watching and following the written instructions, but I hit an issue around timestamp 16:40 (step 10). When I try to make Techline Connect launch from the webpage, I have the "launch techline connect as admin" checkbox checked and I press the button, and the screen plays a brief animation, but nothing else happens. It doesn't launch the Techline program. And, if I try to enter my username and password after launching the program from the desktop, it gives me the message "unable to authenticate user. Please check your internet connection, proxy settings, or use any of the links above for troubleshooting". And of course the links above are just a message that Techline Connect is moving to a browser launch, and the link to the page I was at before. It's incredibly frustrating, because this looks like the last step before I can connect the VCXNano to my car and read the actual error codes from my car. I don't know how GM or ACDelco think it's fine to release software that is this bad.

Will this work on a 2016 Cadillac ELR? Thank you

when i go to gds2 it tells me no valid lease found ?

@watermelon is it normal for the car to turn all the lights on itself and then turn all of them off multiple times after reprogramming? even the charging light is doing this

i have windows 11 do you think that work to my laptop!?

Techline Connect would not open for me with the "Launch Techline Connect as admin" box checked. In order to finish the install of Techline connect, I had to right-click the application shortcut, navigate to the Compatibility tab, and check "Run this program as an administrator"

Updated my 2011 Volt today and found 2 strange things: 1. Techline Connect Bundled both the BECM and Hybrid Controller updates together and I couldn't flash them separately. 2. At the last screen, the Hybrid Controller update skipped altogether and only did the BECM. I flashed it twice and cleared DTC but am unsure of what to expect since it happened both times. Does it show both updates bundled together on all your screens now? If yes, is there a way to force just the Hybrid Controller Update? The previous owner I got this from said he had this recall update done at the dealer. Could this be a 1 time flash only thing?

Great work , I’ve followed all the step , but I clicked clear code at stage 12 After , I tried to follow step 13 and a error code e4399 pop up. And I was not Able to finish . Any idea ? Thanks

Thanks a lot , this is by far the best video even better that any of the manufacturer of the vcx Can you please check if it’s updated to use on the acdelco site? (April 2022 )I don’t want to spend $40 just to check it out, thanks a lot

Hi, acdelcotds change subscriptions now whitch is the right one ?

My concern is why i should create virtual windows, can i do this process without virtual machine , just install it directly on my windows 10 laptop

I’m stuck at the Launch of TLC I don’t know what the username and password is supposed to be.

I am getting the VIN subscription is null error on step 12!!!!!!!

Why do you need a virtual machine?

It's working for Opel Ampera?

This program open insignia theme? Ops screen

Hi, thanks for all this great info, if someone has a blank laptop with nothing personal on it, would this procedure work without VMware?

If you have the GM vcx nano - do you just have to credit a ac delco account and pay 40 bucks to just update firmware? Or do you have to license other paid programs?

olá amigo você faz instalação via remota

Has anyone ever Bricked their car?? I bricked my iphone attempting a jailbreaking it once.

4 more wasted hours on this junk. says windows is missing files. I give up, AGAIN, been trying on and off for almost 2 years. When you get to step 5 after a few hours, it will fail and say it is missing files and cannot install windows. Don't waste your time.