08 silverado factory hu with amps trouble

hi all almost done pulling my hair out looking for any sugestions.  I have the stock hu  non bose  used a pac  aoem-gm1416 interface for alpine 4ch amp split the harness and tied back into the stock wiring for all speakers all sounds good but the  when you sit at a light with the turn signal on for any length of time the left frt  will cut out and not come back till you restart the truck ??  it is a little loud for the door chime tuned it down as much as i could in the dic any way to kill it??    side note when the turn signal kills it i can still here a faint ticking like an old school flasher