Speakers don't work in 2004 Impala LS but the radio does are the apeakers on a different circuit?

i have a 05 LS and i did this recently. you need to check your wire harness behing your CD player to make sure that your wires are still intact, then you if then are still connected, you may want to check your fuses or the speakers themself to make sure that they are hooked up right. sometimes the stock adapter may slide off of the speaker. if you need to see how to take the dash off, i have answered that for a few people, all you need to do is look it up.