I have a lease (7/2016) for 3 years. And purchase or lease, the battery warranty is 8-10 years, depending on the state you're in. But the bigger problem is as you state, time lost. I didn't have Sparky for 2 weeks. The warranty covers a free loaner, but I was then using fossil fuels, which is...
Sounds like hiccup, or you have a cell about to die, as mine did. Only one cell died in my instance, but it shut down the entire car. I tried all the things you mentioned and it never "woke" up/worked. Must have been serious because GM paid (one year old lease) to replace the entire battery...
Well, that may be. Or not. But all power functions as described did stop when I received the "no propulsion" message. Interestingly, the computer readout and screen display functioned, as did Onstar, etc. Albeit providing false information such as showing full green bars, but then noting only "3...
Maybe, but then why did they replace the entire battery assembly (at a cost, said the dealer, of $10,000) rather than just "fix" the one bad cell? My big concern is this happening again (complete battery failure), maybe not when I'm not stopped at a light but going downhill on a mountain...the...
Didn't post results because I had none. It's been 2+ weeks and just today the dealer called to say that GM had to replace the entire battery assembly; that the problem was a failed battery cell. Just one but it brought down the whole thing. Just picked the car up, seems OK, but less...
Just had similar failure (4,000 miles on Spark). Readout said 30 miles left, then within 5-10 seconds while waiting at a stop light, it dropped to 15, then 5 and then the card "died." Instrument panel worked, but no propulsion. Waiting 2 hours for a tow to the dealership. They've had it for...