2020 Chevy Silverado 2500HD Diesel . Had a cracked left rear tail light Lense. Filled with water after so long.
One day noticed tail light was out. Turn signal is hyperflashing. Removed tail light assembly unplugged it Drained water, tail light working but dim. ( These are the factory LED P.O.S.'s) One plug terminal on the back with one bulb which is the backup light. Turn signal still hyper flashing. Replaced tail light assembly and blinker still Hyper flashing
Now what? Disconnect batts and try and rebot system?
BTW, watch out when purcahsing these tail light, advertising will tell you LED , however, when you receive it, its ythe halogen bulbs type.
What a F.N.M
Please advise
Thanks Dave