2006 Chevy Equinox 6 cyl Front Wheel Drive Automatic 66000 miles
When starting the car, everything on the dash lights up, but then goes dim. It took getting a jump to get the car to start. I am not sure if it is the battery or the electrical system. Once I got the car home I turned the car off, and tried to restart it and it did the exact same thing. It took another jump to start the car. I don't know what it could be.
It could be a bad battery or just a corroded battery terminal. Check the terminals to make sure they are clean and tight. If they are, have the battery load tested at a parts store. They will do it for free.