Hey everyone...I'm stumped on a radio issue with my 95 tahoe. When I turn my radio on and listen at a normal volume...no problem. When I turn the radio volume up considerably the sound shuts off. Now this also happened when I installed an aftermarket radio and it did the same thing. Power amplifier problem I think???? Is there any way to test it before I find another one? How about the power amplifier relay? And....where is THAT located? Thanks for any help you can give me. This has been driving me nuts for months now.