I had mine done last Saturday and didn't see anything like this. If anything, the range might be slightly better but, it is so close to "no change" that I really can't tell the difference.

 

Sounds like something may have gone wrong with your update, especially if you're smelling burning rubber now. Probably best to bring it back.

 

Thanks for the feedback @steve2150 Even if your situation is an outlier I'm still planning on waiting a month or two at least before I do this update. I'll let other people be the guinea pigs on this one.

 

Just viewed a YouTube livestream from Transport Evolved after she just had the update at the dealership. She described some odd behavior of the GOM as she returned from the dealer update. She believes this is likely the car misinterpreting the state of charge following the update (since it is now monitoring the cells slightly differently). She expects that this will sort itself out the next time the battery is fully charged. She intends to update us on this.

 

Just so everyone is on the same page, this is a joke; "slight burning rubber smell". The OP is burning rubber on the race home. This is a joke, right?

BTW, I'm a firm believer in "If it ain't broke, don't fix it".

 

No I did smell something that did smell like burning rubber for most of the trip, could have been something outside but the way the mileage on the meter was going down 1 mile every 20-30 seconds and the amount of KW used who knows. Gonna take it for a ride today. Going to the dealer used 5.1 kw and coming home same speeds, traffic etc used 14.1 kw

 

Noticed something else different since update, after I charged the car the screen did not reset Since Last Charge and still shows what was used in KW and Miles since before charging, used to reset every time I charged car before the update.

 

Oh good ... I am booked to do my updates this Friday, which is the 13th, so I am getting ready for three new bugs for each removed one.

 

Mine is scheduled for tomorrow morning, so I guess I will be another data point.

 

I have a 2018 Bolt Premier. 2018 Bolts apparently have this battery management software update already? Since I bought the Bolt in February, the local temperatures have been 30-40F. So I've been getting only 2.5 to 3 mi/kwh unless I drive for 20-30 miles and the battery warms up a bit, then i get 4 or so. I've been thinking my lo efficiency has been just because it is cold where i live. I don't really commute so far so I've got plenty of range. I am waiting to see what the efficiency once it is 60+F outside.

 

Yep, bizarre readings after recall update..

Took 2017 Bolt LT in Monday AM for recall update. 2.5 hours later, I am driving the 20 miles or so back to my house from the dealer, and OMG the average milesKw starts dropping from 4.1 to 1.6. The battery charge appeared full, as if the dealer charged it up, and the center figure on GOM drops 35-40 miles in about 5-6 miles. I pull over to side country road, and cruise at 35 mph, and the usage values show what I have come to expect, about 5kW. I mused for a moment that it had been put on dynamometer, but the odometer did not show any usage. I turned the engine off at a stop sign, restarted and drove home. Arrived home and found the charging details had been changed. So I reentered hill-top at home, with delayed charge until 10PM, and had a couple glasses of wine.

Next day, drove 145 miles round trip, mix of freeway and country roads, got 4.1 miles/kW, and the GOM was more normal. The Youtube video from Livestream in the above post describes the result I experienced immediately after the recall update. Now, 2 days later, all is well. Except, my software is still version 13.4.0, and indicates that it is the latest available.

Bottom line, expect bizarre readings from some of the indicators, but the usage reading, being the only instantaneous information, is the most correct. All the other information is delayed information (GOM & avg efficiency) and will be bizarre.

 

Took 2017 Bolt LT in Monday AM for recall update. 2.5 hours later, I am driving the 20 miles or so back to my house from the dealer, and OMG the average milesKw starts dropping from 4.1 to 1.6. The battery charge appeared full, as if the dealer charged it up, and the center figure on GOM drops 35-40 miles in about 5-6 miles. I pull over to side country road, and cruise at 35 mph, and the usage values show what I have come to expect, about 5kW. I mused for a moment that it had been put on dynamometer, but the odometer did not show any usage. I turned the engine off at a stop sign, restarted and drove home. Arrived home and found the charging details had been changed. So I reentered hill-top at home, with delayed charge until 10PM, and had a couple glasses of wine.

Next day, drove 145 miles round trip, mix of freeway and country roads, got 4.1 miles/kW, and the GOM was more normal. The Youtube video from Livestream in the above post describes the result I experienced immediately after the recall update. Now, 2 days later, all is well. Except, my software is still version 13.4.0, and indicates that it is the latest available.

Bottom line, expect bizarre readings from some of the indicators, but the usage reading, being the only instantaneous information, is the most correct. All the other information is delayed information (GOM & avg efficiency) and will be bizarre.

I think they didn't do the Radio update, just battery mgmt. Radio should be 14.5.0 if they apply the latest. You can download and update to 14.4.2 using a USB drive using instructions on another post in here and a download from Elektric. It has also been said elsewhere in this forum but there are a plethora of modules in the vehicle - updating one does not update all. The common version we see when doing Software Update\Check for Update is the Radio/Infotainment version...

 

Is it possible the update caused the power management system to complete 'forget' your previous driving history? That it is just taking a scientific wild-assed guess based on the SOC until it can relearn where and how you drive?

 

Just had mine done this morning and experienced similar behavior. From what I can tell, the issue is a result of the miles traveled since last full charge being reset to 0, but the kWh used since last full charge remains the same (saw this on the home screen). Therefore, the calculation is wrong. After a full charge everything is back to normal.

One other thing I noticed is that the Energy Settings appear to get reset to the defaults. Therefore, if you use Hilltop Reserve, Location-based charging, etc. they will need to be reconfigured.

 

One other thing I noticed is that the Energy Settings appear to get reset to the defaults. Therefore, if you use Hilltop Reserve, Location-based charging, etc. they will need to be reconfigured.

Good info, makes sense, I would think that the procedure for performing the update would include for the technician to record all the drivers customized settings and re-enter them when the update is complete but even if that is the procedure the technician may not have bothered.

 

Just had mine done today. I took pictures of stuff to verify and yes the battery module update does at least partially reset your drive history. It took me about 2 hours’ worth of driving before the range guestimation system and the efficiency rating started to normalize to my usual driving habits. Other than that there have been no changes other than having to also reset my climate control settings. I would not expect any more changes as all they did (at least how it was advertised) was add a safety feature to the charge control monitor system protocol to give you a heads up of a cell under voltage BEFORE you are stuck out on the middle of the freeway. If you are an unlucky bolt owner with this problem. At least it will now be less likely to strike while you are in the middle of nowhere. The other update is purely patches for the infotainment system. I have not had a chance yet to check on the video playback changes.

 

The question is, will GM fix this glitch (thus making it useful to wait) or do we users simply have to weigh the risk/benefit ratio of the update?

 

I hate it when it gets complicated.

 

I went in for the powertrain battery update and it was pulled from the system. My dealer did not install it because there was nothing they could install. That was Saturday, April 14th.


I got the infotainment update 14.5.0 and didn't notice any significant differences. The email says what changed, but I didn't test any of it.


The tech left the memory stick in my car so I have an image of the infotainment update for anyone interested. I need a place to store the 382MB file.

 

Can I get that image from you?

 

Tonight after 8PM EDT. Send me a PM if you want the link. It will be download limited, but I don't know how much.

 

So the update to the PCM has been pulled? Can anyone else confirm this? I would like to have the update done at some point and don't mind the resets that are done.

 

Edit/Update: had the upgrades/patches installed today at our local dealership. When driving home (about 3 mi) noticed the expected range dropped by 12 miles, and the apparent efficiency was something like 1.5 mi/kWh. Put on the EVSE at home for maybe 30 minutes, after which drove normally about 100 mi ... 4.8 mi/kWh, if I am to believe all the readouts.

If this is the end of the story, I am cool with it.

 

I had wondered why I never got notification from my dealer, I stopped in the first day I read about the update they told me they had nothing in their system.

The service writer told me he was the one that would send me the notice when they were informed of it, that was early last week nothing so far.

 

I was in today for the two open 2017 recalls.
They updated the radio firmware but have a note on the Invoice that the "Loss of Propulsion High Voltage Battery Without Notification" update - "RECALL PROGRAMMING NOT NEEDED".

I noticed charge settings reset - not a huge deal to me but it would be nice if they could preserve in future updates.

 

The 14.5.0 update is available for 1-3 days. PM me if you want it.

After that, I’m pulling it.

 

Not enough posts to be able to message. Is there another way? I do want the update...

 

Not enough posts to be able to message. Is there another way? I do want the update...

Check your PMs. You can’t send but you can receive.

 

Perfect, worked like a charm. Thank YOU!

 

Please confirm the pulling of the battery status update as some of us have to drive over 90 miles to get to a dealer who “can” do it. It is a dealer in another State who services Volts but said, after they checked, that they “could” do “this” update. Will they even know it has been pulled?

 

Eriamjh1138 Can you send me the update please ? I cannot send a PM yet.


THANK YOU VERY MUCH!

 

Eriamjh1138 Can you send me the update please ? I cannot send a PM yet.

Check your pms.

Do me a favor, everyone. Share the love, eh? I’m gonna pull the files tomorrow night so please share.

 

Here is the link:

https://1drv.ms/u/s!AldQqZArgdy-ga0nDsojm3KuK8D6aQ

Thanks to Eriamjh1138 for supplying the file.

 

Just got my recall phone call. After reading through this thread, it looks like a good step and just can't worry much about the GOM immediately afterwards, since there is some loss of historical data. I still write down my mileage, usage and amount of kWh added with each charge. An old habit, from the days of ICE, when I recorded each fill up and often calculated mpg. Happy that instead of about 18 mpg or 12 cents/mi, I now get about 4.5 mi/kWh and about 3.5 cents/mi.:nerd: