I had this problem several months ago, but for some reason it started working again on its own. Haven't had the issue since (btw, this is on an '08 Yukon Denali XL). No sound, blinkers were silent, the headlights on warning when the key was out and driver's door opened didn't work. I did learn that the blinker clicking is generated in the audio system. It used to be a relay that clicked. Check for pinched wire harness below and around the drivers seat.
523 views
Usually answered in minutes!
×