short circuits in the turn signal and brake light circuits
Check the fuses for your brakes.
Blade Type ATO/ATC Automotive Fuses: 10A for the turn signal lamps & 15A for the Brake/Hazard Lamps. Hope that helps.
First, check all fuses. Then see if you are getting power to the bulbs. Then the next possibility would be the turn signal switch.
Check the fuses for the trailer wiring.
There are many problems that come with owning a car. If a Left rear brake and turn signal do not work, a person should check the fuses, bulbs and wiring.
Check fuses for brake lights. If your brake lights aren't workings the truck will not release the parking pin as it needs the signal from the brake switch on the pedal.
have you checked the fuses?
Probably the flasher unit needs to be replaced. This is an electronic switch which usually mounts underneath the dashboard.
Check the fuses and if they are good then check the brake light switch.
It could be the ground wire, the brake light switch, a damaged wire or connector or the turn signal switch.
I am having the same problem and i was told it is the turn signal switch that is bad
Replace the signal flasher relay.