I am currently having the same problem you are having check the fuse to see if it is blown the blinkers and brake lights are on the same fuse my system has a short in it somewhere and is popping the fuses I am in the process of running new wires since the wonderful people at Chevy ran all the wires thru the frame and you can't access them
Possibly a defective Flasher Relay. Replace the relay.
IT COLUD BE A RELAY BOX multi function switch( turn signal, lites ect.)
Defective flasher relay.
If the fuse is good and the bulbs are good, replace the flasher relay.
turn signal relay is bad
Replace the turn signal flasher relay.
The 1996 GMC Yukon brake lights work by receiving power from the brake light relay switch. The brake light relay switch is connected to the brake pedal.
The brake lights in your 1983 Nissan pickup truck are controlled by the brake light relay switch. When the brake light relay switch malfunctions the brake lights will stop working.
You have a bad relay. Your blinkers run on a different relay than you hazards do.
The brake relay switch is bad.
No, but the circuit is protected by a fuse.
There is no brake light relay. There is however a brake light switch located above the brake pedal.