Christop

driving 2020 silverado z71 bought in december today wanted to put jet ski in water hook up trailer only getting right turn signal no left turn, no running lights , no break lights or hazards so me i change all 2 1157 bulbs on trailer only right turn signal plugged into 4 pin directly to vehicle connection then tried the optional round connector to flat 4 and flat 5 connector get right turn only. hooked up trailer to friends vehicle everything works tested with volt meter power to green right turn only nothing on other wires changed all trailer fuses in fuse box still nothing from what i read guessing i will be dropping jet ski in water with right turn signal only until i can get it to dealer i had the same issue with 2017 silverado it was the harness