brakes

95 gmc k-2500 that has brake problems The peddle is soft I have bled the brake put on new front hoses and replaced the master cylinderand wheel cylinders. New front pads and the shoes have only a couple of thousand miles on them. This truck has 250000 miles and had the abs light on for quite a while. I have been reading on this forum that you should not force the brake fluid back into the master cylinder. I have probably done this over 20 times in the last ten years with no problems. The booster seems ok, as it will drop slightly when the engine is started. After replacing the master cylinder when bleeding the brakes. After all the wheels were bled the front compartment on the master cylinder had dropped. I had topped it off after the rears where bled. Where did that fluid go? Any ideas on what else to do?
Thanks
Paul

To bleed the brakes if you have let air into the ABS system requires a ABS capable scanner to bleed them.
Another thing make sure rear brakes are manually adjusted up good.
Also pull the ABS code and post back code.
MT

To bleed the brakes if you have let air into the ABS system requires a ABS capable scanner to bleed them.
Another thing make sure rear brakes are manually adjusted up good.
Also pull the ABS code and post back code.
MT



The backs brakes are adjusted up tight. the abs code says its a wheel sensor.
will this scanner work Equus GM Code Reader they are available local
thanks
Paul

The backs brakes are adjusted up tight. the abs code says its a wheel sensor.
will this scanner work Equus GM Code Reader they are available local
thanks
Paul

Speed sensor code will not drop the pedel.
Code readers and OBD11 and lower end scanners are not ABS brake capable scanners.
You need to find a high end high dollar ABS capable scanner like GM tech 1-2 or a Snap on scanner with the ABS cartage to bleed the brakes.
Find a good repair shop that has one and have them bleed the brake system and go from there.
The wheel sensor code will point you to the wheel sensor code problem.
What code no was it?