95 Blazer, No Rear Brakes

Probably still have air in the lines.

Does it have ABS? If so it may be one of those systems that can only be properly bleed by hooking up a computer to it to make the ABS valves open up and purge air.

Don't have to on this.

Yes, vehicle has K-H 4WAL ABS system, I do not believe that air was introduced upstream into the ABS system.

If it is the combo valve, you can usually untrip the switch by pumping it up, holding it down 'hard' and opening a front bleeder. This makes the combo valve trip towards the front usually opening up the back for use and another bleed to get the rest of the air out.

Mike

I remember someone telling that when you bleed the brakes with ABS just let the brake pedal go down until the brake light goes out.

If the line broke and you lost all the fluid air got into the system. And you do need a scan tool to cycle the ABS system during bleeding.

Problem solved. I bleed more air out of the rear brake lines using a pressure bleeder setup instead of manual pumping of the brake pedal. I also readjusted the brake shoes tighter after fixing the seized brake shoe adjusters. I had rear brakes then but the brake warning light was still on. I had an assistant sit in the truck and push down on firmly in the brake pedal while tapping on the side of the combination valve. No change. I started the engine and repeated. The brake warning light finally went off due to the extra brake pressure from the vacuum power brake booster.

Power brake boosters do not change pressure. The light went out do to the air being out of the system and the ABS solenoids cycled/set when you turned the key on.