When i push the gas hard the lights dim and the battery meter goes down and if i floor it the battery light comes on as well as the lights dimming ... Itz a 2000 4dr chevy blazer 4x4 and i dnt kno wat might be causeing it except maybe a bad fuel pump or belt possibly a slipping ?

 

Start by checking your battery and ground connections.

 

then bring you althernator to autozone and have them check it on their machine, casue a while ago mine did the same thing, but the truck completly died and my and my dad had to jump it all the way to the gargae

 

sounds like the alt to me.
Drive it to autozone and have them load test it.

 

It deffinitly sounds like an alternator problem, take that in first and get it checked out!!!

 

ok thanks ill def have to go get it checked out