Power door lock and windows are not working and the abs light on

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! If your ABS light came on and now the power door locks and windows aren't working on your 2004 Chevy Express 3500, this sounds like an electrical gremlin. I'd start by checking the fuses and relays related to both systems. It could be a shared ground or a wiring issue that’s affecting both the ABS and the power accessories. Sometimes a bad ABS module or a failing body control module (BCM) can cause weird electrical symptoms like this. Have a scan done to check for any trouble codes. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.