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Just to put another one on the list here, I have a 2017 premier that's been at the dealer (Ron Tonkin, Portland OR) waiting for a BECM since 1/21. On 1/28 they told me a BECM was in transit, but apparently not. No loaner, no rental reimbursement. I can't overstate how much I've loved this car, but when I get the car back, that'll be the end of my Volt ownership or any dealings with GM.
 

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2017 Premier with 40,000 miles just went in for EGR valve & cooler replacement (no warranty, $1700 bucks, ugh). Tech ran into this issue when trying to start the car for the first time after the EGR replacement. Confirmed codes from TSB and ordered BECM. Now I wait.



Holy crap! Apparently I'll be waiting a long time!

Was told it would not affect driveability so they made me turn in the loaner and drive the Volt home. Let's see how long until I run into the issues described in this thread. For the record, I never had the issue myself. It was just the tech who worked on the EGR replacement that found the issue.

Was also told that when (if?) the part shows up, it's a "quick" job that I'll just be able to wait for rather than getting a loaner. These guys obviously have no idea what they're talking about.
Replying to my own thread to update on the bold portion above: Check engine light came on yesterday and the diagnostics report on the My Chevrolet app indicates an issue with the lithium ion battery. So far it still starts and charges OK, but I suspect it won't remain that way for long.

Hopefully they get a shipment of these battery control modules in soon!
 

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Replying to my own thread to update on the bold portion above: Check engine light came on yesterday and the diagnostics report on the My Chevrolet app indicates an issue with the lithium ion battery. So far it still starts and charges OK, but I suspect it won't remain that way for long.

Hopefully they get a shipment of these battery control modules in soon!
Per your previous message where they confirmed BECM issues but denied a loaner because it was still drivable, I'd be curious to see if your symptoms progress to what I (and other people) dealt with in terms of BECM failure. My assumption is that the failure is of a binary electrical/software nature (perfect one day, failure state the next) as opposed to a gradual mechanical failure, but maybe not? In any case, if your car gets to the state mine was in, well, technically it could be coaxed into under its own power, but I wouldn't really call it driveable.
 

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Update on my 2017, 80 days still no BCEM. Sitting at the dealer
Has anyone waiting this long tried contacting GM corporate offices about this issue rather than just going through the dealer? This is really unacceptable from a customer standpoint.

I thought I read that the part is the same for the Bolt. If that's true, and they're back to building Bolts (which I'm not sure they are), they should pull a bunch from the factory and use them for these repairs.
 

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Has anyone waiting this long tried contacting GM corporate offices about this issue rather than just going through the dealer? This is really unacceptable from a customer standpoint.

I thought I read that the part is the same for the Bolt. If that's true, and they're back to building Bolts (which I'm not sure they are), they should pull a bunch from the factory and use them for these repairs.
I've reached out to the apparent program manager for the Volt and Bolt programs (John Ferris on LinkedIn) -not sure if he's the right person or even still in that role. From my point of view, my employer has had to make choices about prioritizing new sales vs focusing our supply chain crisis limited resources on existing customers. Just like new cars, if we can sell a new machine, it will generate years of parts and support revenue, but it doesn't make sense to sell as many new units as possible if it means burning our existing customers... so we don't. GM is huge and complicated but I can't help but feel sure that when I see low-production buzz generators like the Lyriq or Hummer roll off a new line in this supply environment that it intentionally came at the cost of supporting existing customers, especially when we're talking about a critical part that appears to have had a known high failure rate for many years. Given that the Volt/Bolt represent the real world EV customers GM will need to generate the word of mouth EV sales they seem to banking the future of the company on, you'd think they'd prioritize supporting those customers. Or, apparently, not?
 

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Per your previous message where they confirmed BECM issues but denied a loaner because it was still drivable, I'd be curious to see if your symptoms progress to what I (and other people) dealt with in terms of BECM failure. My assumption is that the failure is of a binary electrical/software nature (perfect one day, failure state the next) as opposed to a gradual mechanical failure, but maybe not? In any case, if your car gets to the state mine was in, well, technically it could be coaxed into under its own power, but I wouldn't really call it driveable.
Well, it doesn't seem to be a constant degradation because today the Check Engine light turned off in the in the dash and the My Chevy app show no current issues. It seems I'm certainly on the precipice of a total BECM failure but at this point it comes and goes.
 

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Well, it doesn't seem to be a constant degradation because today the Check Engine light turned off in the in the dash and the My Chevy app show no current issues. It seems I'm certainly on the precipice of a total BECM failure but at this point it comes and goes.
As I'm spending more time searching this forum and Reddit, I'm learning a) this has been an issue forever b) it sounds like it's an issue with the solder in the BECM which is particularly afflicted when it's cold and the solder contracts. This lines up with my experience - the failures were on especially cold days, which initially had me assuming 12V battery issues. To further complicate the issue, pulling the 12V resets everything, giving you the impression that the BECM is fine and the car is driveable... for the moment.
 

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About five weeks ago, my 2017 Volt refused to start and the check engine light came on. Had to get the car towed to the dealer. The battery energy control module had to be replaced. This took five weeks! The dealer blamed the chip shortage. I had a loaner for nearly the whole time. GM picked up the tab on the loaner. I have my car back and it appears to be none the worse for wear. I noticed one odd thing, however. After a full charge, my total EV range is 36 miles. It used to be 50+ miles.
 

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About five weeks ago, my 2017 Volt refused to start and the check engine light came on. Had to get the car towed to the dealer. The battery energy control module had to be replaced. This took five weeks! The dealer blamed the chip shortage. I had a loaner for nearly the whole time. GM picked up the tab on the loaner. I have my car back and it appears to be none the worse for wear. I noticed one odd thing, however. After a full charge, my total EV range is 36 miles. It used to be 50+ miles.
I'm wondering if the range will come back up as it learns your driving habits again? I'm guessing that was reset in the process?

As for taking five weeks and GM picking up the tab on a loaner, bravo. Only waiting five weeks and and getting a loaner seems to make you an outlier. Did the dealer arrange the loaner, or did you manage to get it from GM themselves?
 

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I'm wondering if the range will come back up as it learns your driving habits again? I'm guessing that was reset in the process?

As for taking five weeks and GM picking up the tab on a loaner, bravo. Only waiting five weeks and and getting a loaner seems to make you an outlier. Did the dealer arrange the loaner, or did you manage to get it from GM themselves?
The dealer arranged the loaner. The associate told me that my car was still under warranty and so the loaner was covered. I hope the range comes back up. Various parameters were reset and I hope that the range was merely one of them.
 

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Well, it doesn't seem to be a constant degradation because today the Check Engine light turned off in the in the dash and the My Chevy app show no current issues. It seems I'm certainly on the precipice of a total BECM failure but at this point it comes and goes.
CEL is back on and while the car starts (so far) after a short drive I get the "Propulsion Power is Reduced" message and the car switches over to the gas engine. Car won't even charge now (solid orange light when plugged in).

Not long before it's dead in the water I'm afraid.
 

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CEL is back on and while the car starts (so far) after a short drive I get the "Propulsion Power is Reduced" message and the car switches over to the gas engine. Car won't even charge now (solid orange light when plugged in).

Not long before it's dead in the water I'm afraid.
That's exactly what mine would do, fwiw. Other than the whole stopping mid-motion, which happened twice for us.
 

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I've had some studders while driving with "Propulsion Power is Reduced" but never had it completely stop. How did you get it going again when that happened? Gotta be prepared :)
For me, holding down the start button (can't remember if foot needs to be on or off brake) for something like 7 seconds triggered a reset that would allow me to proceed in ICE/reduced propulsion mode. Limped it home both times that way.
 

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Add another one. Posted it on another thread. Dealers says no loaners. GM might reimburse rental. also dealer said it's gonna be forever till they get the BECM and they can't even begin to tell me when. Has anyone discussed any class action on this topic?
 

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Has anyone discussed any class action on this topic?
You should start the ball rolling, contact an attorney. Post the results of your discussion in a new thread.

Assuming the repair is covered by a warranty, I'm not sure how supply chain issues factor into suing a company for lack of repair parts. I suspect if you are outside the warranty, suing over lack of repair parts is likely a dead end.
 
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