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GM recalls 2013 Chevrolet Volts for battery software

11024 Views 51 Replies 23 Participants Last post by  vogonpoetry
In the news:

"GM said Friday that it will recall 3,233 2013 model year Chevrolet Volts to remedy a problem with battery cell balancing that could cause the car to shut down in traffic."
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Can those with access to GDS2 confirm what HPCM2 software they have and whether or not they are on the recall list?

My 2013's HPCM2 has the current latest calibrations, 23206093 (operating system) and 24281683 (calibration). But I updated them myself so I wonder if GM is referring to the original software or the newer version. Can GM even tell when a vehicle is updated vis SPS?

The TIS2Web page for the HPCM2 was down for the past week so I had assumed GM pulled access to it to avoid anyone else updating to the faulty software. But now its back up with the same software so perhaps the bug was only on older versions and GM just pulled it temporarily while the confirmed it was not on the newer software too. But thats just a guess.
A new calibration now shows up on TIS2WEB-

Part Number CVN Bulletin # Description
24292110 N/A - Calibration Update to Address Cell Balancing issue - Bulletin 18215

GM recall page has also been pulled. Likely being updated to reflect the solution.
GM Recall page has updated from "INCOMPLETE. REMEDY NOT YET AVAILABLE" to just "INCOMPLETE", meaning you should be able to schedule an appointment with a dealer now. Though maybe we should wait for our actual recall notices to come in the mail first.
Finally got mine done. Took almost 2 hours at the dealer... should have flashed it myself again.

Afterwards there was no change in mix-max cell voltages after a charge so I'm led to believe my cell balancing was never actually broken.
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