Mirrors

I Was Wondering If A 2001 silverado and a 2004 silverado will be different in the mirrors their connection shape or what is it that is different ive been trying to change the mirrors on my truck ive seen some on ebay with led blinkers infront of the mirror but only till 02 chevys i like the street scene brand ones but i prefer the ones with the LED but i dont know if theyll fit on my 04 silverado.