Silverado EV Auxiliary Battery Issues

I had a similar problem with my Silverado, but it's not an EV. The auxiliary battery can be a pain. I had the 'weak start' and some weird electrical glitches. Check if all your connections are clean and tight. A loose connection can cause havoc with the charging system. Also, have you tried testing the battery's voltage? What readings are you getting?

Thanks for the suggestion! I haven't tested the voltage directly. Would low voltage definitively mean the auxiliary battery is failing, or could other things cause these symptoms? What voltage reading is concerning?

Low voltage is a big red flag. I can't give you the exact voltage for the EV battery, but if it's significantly lower than it should be, the battery is probably done. Honestly, given the electrical issues you're describing, and since I'm not well-versed in EVs, it might be worth getting it checked by a professional. You don't want to mess with the electrical system and cause more damage. For me, it was a faulty battery, cost me about 290€ for a replacement.

Thanks for the insights and sharing your experience! Given the potential complexity and the cost you mentioned, I think I'll get professional help to diagnose it. Hopefully, a battery replacement will fix the electrical issues.