Chevrolet Repair: pulling when brakeing, abs light, abs computer

Question
I have a 95 gmc 4x4 it pulls to the left all the time and it does more when bakeing i changed the caliper and hose that side brakes were shot the other side looked new this did not help it seemed to make it worce the abs light stays on. do you think its the abs computer bad?

Answer
Hi Steve,
No, I doubt it is the ABS computer, or any part of it.
I think you hit the nail, but maybe the wrong one.
It is possible that the hose on the OTHER side is plugged, and it is just not doing any braking.

I am mildly curious about this pulling all the time, worse while braking....did that not get fixed when you replaced the worn caliper? Is that caliper pressure staying trapped, thus applying the brakes?
I have seen pistons stick, with no pressure remaining, but if you replaced it, that shouldn't be happening.
Drive it a bit, then pull into where you work on it, apply the brakes to stop, and quickly jack up the wheel and see if you can turn it. I would want that pressure to go away as soon as you release the pedal, allowing you to turn the wheel by hand.
If it is hard to turn, crack the bleeder screw, and see if there is pressure trapped there. If there is, I would apply pressure several times, while working backwards up the brake line to see where the trapping is occurring. There may be something lodged in a line connection, acting like a check valve.

Now, with four wheel antilock, it may be possible for a valve to the right front to be stuck open, thus no braking there, but I have a fleet of trucks that get regularly abused, and have never had that happen.

I have sure seen the rubber brake hoses plugged though. Right where there is a sleeve clamped over the hose to mount it to the control arm. They come apart inside, and the rubber forms a check valve.
You may have had a piece come loose, and be in the system for that wheel.

Now I can see in my mind a scenario where you may need to open up the lines going to that sticking wheel at each joint, not loosen, but completely open the connection, and flush some fluid into a clean container. Then go to the next connection.
I'd be looking for a chunk of rubber caught where a line connects to a fitting, probably on the wheel side of the fitting. It would allow fluid to go to the wheel, but then flap back against the fitting, and stop flow back out.

This all depends on weather it still pulls ALL the time, and fluid is staying trapped in that wheel, as mentioned above.

Good luck,

Van