We have a 2003 Chvey Venture. Last week the battery light came on my husband checked connections they were fine. Two days later all of the lights came on battery, airbag, security, door ajar everything. Then it started accelerating on its own. Eventually we lost all power. The battery and alternator tested good. We have know clue what the problem could be. Anyone with any ideas or who have experienced this, any suggestions?
It sounds like a problem with the charging system. It may or may not be the alternator causing it. Fully charge the battery first using a battery charger then test the charging voltage with the engine idling and no accessories on. You should see between 13.5 and 14.8 volts.