On 08-05-22 we got our monthly Diagnostic Report email from OnStar. It said our battery pack was AOK, just as it says every month. Only one problem with that...our cell group #47 fell off the cliff that day. The total highest-to-lowest cell group delta for the five plus years we have owned this car was 0.025 volts, from 100% SoC to 5% SoC across 96 cell groups. Cell group #47 is now 0.026 volts below the AVERAGE cell voltage. GM has decided "This is fine."
We will limp along with this original pack until GM solves the software bugs they have introduced into the fire recall battery packs they are making. The new software can brick the car at any time. They can reload the software to clear the fault, but it can return at any time. God only knows when they will figure out the problem.
We will limp along with this original pack until GM solves the software bugs they have introduced into the fire recall battery packs they are making. The new software can brick the car at any time. They can reload the software to clear the fault, but it can return at any time. God only knows when they will figure out the problem.