rear spekers have no sound

I recently noticed my rear speakers have no sound. I can't say i remember the last time I heard them. I sent the radio out for checkup and the report says it was ok. I had a short on the amp due to the wire shorting out on the body when installing (crimped on body)and it blew the CD portion. repaired the wire and replaced the amp. I don't recall ever hearing the rear speakers(deck lid) after or before that. Could the radio have a bad channel or is the amp causing the problem?:popcorn:

Something happened to me somewat, i just took the factory amp out of the car and rewired the speakers to the head unit. works fine and sounds fine now!