2nd Gen Non-Engine/Transmission grabbing rear brakes

[randol3]

94 2wd , replaced rear wheel cylinders, master cylinder, rear rubber brake line, still grabs . Looking for a rwal valve that's under the master cylinder, any ideas or other test? Only thing I know that is left. Having trouble finding one . Anybody know if you can rebuild the rear wheel anti lock valve? Is there any special way to bleed the system?

 

[RikDavis]

did you change the rear shoes? I used a low cost set from Advance Auto on my 99 and they would grab on the first few stops of the day. Replaced them with the high end shoes and problem was gone.

 

[JMcCoy]

Also check your load/height sensing brake proportioning valve.

 

[MLee]

Also check your load/height sensing brake proportioning valve.

These truck don't have a height sensing valve.

 

[The patriot]

I bleed mine until the new clean fluid comes out. Then a little extra.
FWIW I have 4 wheel ABS.

 

[JMcCoy]

These truck don't have a height sensing valve.

Then is there is a regular proportioning valve to check? The proper brake bleeding procedure is farthest to closest from the master cylinder (RR, LR, RF, LF), and repeat if necessary.

 

[randol3]

would the sensor on the diff cause this?