Light for power steering goes in and out along with rolling backwards in drive .

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Your G6 is definitely trying to tell you something—and it’s not good. When the power steering light flickers, the car rolls backward in drive, and every dash light flashes during shifting, that’s usually not a mechanical issue. It’s electrical, and likely tied to a failing power or ground connection, or a control module losing its mind. Start by checking the battery cables and grounds—especially the one from the battery to the chassis and engine block. Even if the battery tests good, a weak ground or corroded connection can cause voltage drops that confuse the power steering, transmission, and body control module. That would explain the jerking, stalling, and the light show on your dash. Also, have the alternator tested under load. If it’s not charging properly, the electric power steering and transmission sensors won’t get the voltage they need, and the car may stall or fail to start. 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.