2010 Acadia SLT AWD wouldn't start after it ran out of gas. Replaced fuel pump, ECM, and ECU. Drove it home, radio won't come on, auto locks don't work, next morning battery was dead. Charged, car started. Noticed pencil eraser sized light stayed on after shutting car off. Removed battery cable overnight, car started next day, but wouldn't shut off. Turned key several times and removed battery cables, it still ran for 5 or 10 mins. I'm at my wits end with this vehicle, but I need it to start and shut off so I can sell it. Any suggestions on what's going on with it? Fuses? Ignition switch?
