Mike16LTZ

I am having a similar issue. 2016 Silverado LTZ 1500. At first i started getting a fast left blinker flash and a warning light saying "left rear turn signal indicator failure". They are LED, so i had to buy a new set of tail lights. Well, the problem didn't go away. Not only do i have that problem, but now my truck has decided to start flashing the left high beam with the left blinker. Everything else works as it should. Could it be the multi switch?