Brake light on my chevy s10 blinks

may be you should make a diagnostic and you can do it in a garage or you can do it by yourself if you want to do it by yourself you need some tools and you can find some good ones here: chinasinoy.com

You did all this replacing but didn't check and follow power.Got any money left.lol,get a meter and check power at brake light switch,see if power is going to switch.

First thing you need to get the trouble code out of the computer.

your power starts at the brake light fuse,check with a test light,then proceed to stop light switch on brake pedal under dash,one wire will be hot when when you check it with your test light, the other won't be until you press down the brake pedal then the power flows through to the second wire,if no power to second wire replace switch,if you have power remove tail light bulbs and check for power in side socket.

either the park brake is on a little bit or its low of brake fluid, if its low then it could be a leak or it could be that the calipers are pushed out a bit meaning time for new pads

Have you had to add oil? The fact that it comes on going up hill would suggest it's the oil level.

Do you have power with a test light in and out of the switch? Do the turn signals work? Will the brake lights work if you play with the turn signal handle?

here is a link to a good abs site,it will tell you the proper way to get abs codes and a code chart hope it helps DBhttp://www.aa1car.com/library/abs_kelseyhayes_rwal.htm

Try checking the headlight switch it may have broken contacts in it. Easy fix go to a salvage yard find same make and model truck, swap headlight switches.