I have a 1988 Chevy Silverado C1500 with a 305 I'm having trouble with the radio the speakers work fine and aren't grounded out it makes an odd blirping sound when it cuts out and it may or may not come back I could have radio for 30 seconds or 30 minutes I am making a 17 hour drive this weekend and that's a long drive without music any help or advice would be appreciated the radio is stock and I don't want to replace it with an after market system