1999 Chevrolet Camaro Q&A

1999 Chevrolet Camaro Question: droning noise heard inside cabin around transmission hump

issue seems to be related to charging system, however,noise is not comming from alternator. if single lead to alternator is disconected, noise disappears. noise only heard in cabin and is very annoying.issue started at around 16k. thanks -
Answer 1
ck tensioner and idler pulleys -