I only have sound coming out of my front right door speaker and both twitters.

What is your question?

I have removed all the door wire harnesses and shook the out and water poured out. once they have dried out, I still have the same issue. Since I know the front speakers are wired together by sides of the vehicle, I am confused as to why I have no sound. Is it the amp, the speakers, the head unit or the wiring harnesses? Best guess is I will need to replace the speakers since I have sound from 1 cluster and a twitter, but I am looking for advice.

What makes this problem better or worse?

allway the same

How long has your 2011 GMC Acadia had this problem?

few weeks