I may know the answer if it is a full size Blazer. There is a ground wire for the socket that may be connected to an area that has rusted and no longer is grounded. Reconnect to a solid piece of metal for the light to work.
The hazard switch and the turn signal and brake lights are all incorparated, chances are the 3-1 switch is broke internally check all fuses
check the multi function switch. I hava a 96 Chevy Monte Carlo and I had the same problem . I changed the multi function switch and the brakes lights now work. the rear brake lights run thru the switch on the turn signal circuit. try it and see.
either your fuse is blown or the wiring is bad
Check the brake light switch.
Check the fuse, check the bulbs and check the brake light switch, it should be one of those.
turn signal switch needs replaced!
The 2001 Chevy Blazer brake lights may not work and the third bake stays on because the current light needs to be replaced. A replacement brake light can be purchased at an Auto Parts store like Pep Boys.
AnswerMost likely a faulty turn signal switch, or possibly the wiring to it.replace switch assembly.
either dimmer switch or blown fuse If you are saying that the tail brake lights are working but the third brake light is not....It may be a defective turn signal switch in the steering column.
The center high mount led brake light unit has been known to go bad.
I can't turn the yellow brake or parking lights on my 1998 Chevy blazer off and it's draining my battery.Could you please tell me which fuse or switch I'd use to disable the front yellow lights? This is happening even with the car off.
Check fuse, check bulbs, check brake light switch, check wiring and then check signal switch, in that order.