2004 Chevy Malibu LT V6 car problems

2004 Chevy Malibu LT V6 battery light comes on during hard acceleration goes off as soon as I let go of the gas or it changes gears I have problems starting the car sometimes too not often though 140000 miles on the car what could be the problem?

Have someone check the serpentine belt for wear.



will do thats whats it seems to be more than likely on what ive been reading up online

I would think that your tensioner is weak allowing the belt to slip, and needs to be replaced.