noticed the other day i have no rear sound coming from either rear speakers. i know its probably a poor connection but i want to know if the only connection is on the back of the radio or if theres an amp somewhere or if theres a common problem with these

 

There are several connectors between the radio and speakers. Or the amp and speakers. Depends on what your option codes are. RPO code UQA has an amp. UQ3 and UQ5 do not have an amp.