This happened to me with my Volt. Had to have the BECM replaced, just like it says in the article.
Same thing happened to mine. Except 3 Chevy dealerships refused to fix it under warranty. Despite there being a service bulletin on exactly that failure. They even charged me for the diagnostics.
Every car I ever owned was a Chevy but after this I will never buy another GM product.
Fuck GM. They fought the union ridiculously on giving them decent wages, then afterwards still had enough free cash lying around to do a $10 billion stock buyback and increase dividends by 33%.
WTF? They fixed mine for free, and they showed me the “bill” and it supposedly would have cost many thousands of dollars.
I got corporate involved and they said the dealerships should fix it for free but they could not force them to. Corporate said that if I paid to have my car towed to a dealership 600 miles away they would repair it under warranty.
The estimates I received from the dealerships wanted $12000 to replace the becm. The car was valued at $15000 so that made no financial sense to repair.
The car only had 62,000 miles on it and was in perfect condition other than the becm.
Oof. That is not something you want breaking. I am curious if the BECM handles charge balancing between the cells of the entire battery pack… I am guessing that is a thing with large EV batteries.
