I have a 1993 Chevy S10 Blazer and I ran into a problem after a week of not driving my truck with the rear running lights, brake lightes, as with the Front and Rear blinkers not working.. ..

SOURCE: 2000 ford focus rear driving lights

Had this problem myself. Try replacing your brake light switch, they are not real expensive and can be changed in a matter of mineuts. It is located by following your brake pedal all the way up to the top, when you get there , there id a switch that when you push down on the brake it releases the button to put you brake lights on and when you take your foot off the brake itallows the switch to go back.

SOURCE: brake light on 2001 chevy blazer LT 2wd

When my blazer did this they had to replace part of the wiring harness in the steering wheel. It took forever for them to get the parts because we live in nowhereville, but once it was in it works again and no problems. I had to take it to the actual chevy dealer because none of the other places had a clue. good luck.

SOURCE: 1999 Chevy S10 Blazer 4x4. Replacing rear pad's,& Bleeding Breaks

have one person in the blazer pumping the brake pedal and then hold to the floor, crack the bleeder then tighten, release pedal, repeat till all air is out one side at a time, if this does not work then your ABS unit is bad witch if u follow your lines from your master cylinder u will find a black box with a motor on it, or the master cylinder itself is bad, it also can cause u to have no pedal, replace the master cylinder first, most likely cheaper.

SOURCE: 98 chevy S10.Tried bleeding brakes,Front ok,Rear not reacting

Check the master cylinder and make sure it is working correctly and both resevoirs are full.

SOURCE: 99 Chevy Tahoe... Rear turn signals, brake lights, and hazards

I had this problem, and to be honest, it happened to the left side about a week later...it's the board that the bulbs plug into...it's a very common problem with this model. So popular that you can normally get the socket board off the shelf at a parts store! it's extremely simple to replace, and I replaced all the bulbs at the same time!