01 Denali w/ Bose Luxury problem

[realjoe2000]

I just purchased an 01 GMC Denali with the Bose luxury system(Y91 option). I have no sound at all 4 door speakers. I do have sound at speakers in the console and the speakers at the rear doors and the sub. But nothing at all in the 4 door speakers. Would I look at the head unit or the amp for this problem. I do get an anoying buzz at a small speaker in the headliner, even if unit is off. On star seems to be working fine if thats even related. I'm lost and looking for some direction. Thank you.

[dave92cherokee]

Start by checking the amp as it might have blown causing the 4 speakers to cut out. As for the speaker in the headliner having the buzzing sound it sounds like that speaker has blown out on you.

[realjoe2000]

Thanks for the reply , Dave but I just got a known good amp from the salvage yard at the tune of 175 bucks. Same thing, so I think I eliminated the amp. Thats what I thought it was at first too. Unless theres another amp somewhere i dont know about. I found this one in the rear quarter panel. Must have more to do with the radio itself. I just didnt want to keep replacing expensive components if I didnt need to. Thanks again for the reply.