tecate1987

I copied this from another link, I have the same problem, and since this one was old it wasnt going to get answered.
am replacing the brake lines on my 01 Silverado on account of failure of one of the lines due to corrosion.
Anyways, I am trying to trace the lines back from the proportioning valve and it's kind of a pain. Can anyone help me identify the which inputs go where so I can just cut them all off...it will save some time. There are three lines on the top and two on the bottom of the valve body. One goes to the rear of the truck (top right I believe when facing the lines) and then two go to the master cylinder and two go the front brakes but I don't know which is which.

Any other tips or tricks on this DIY project appreciated.

GJ750_WV

Did you ever get an answer? I have the same problem...Can't remember which lines go to the master cylinder.?


Thanks

tecate1987

I didnt get an answer but I traced the lines, what a pain.
There are 5 lines in the
the bottom 2 are the master cylinder lines,
the top ones are the front brake lines, and the top outer towards the driver door is the rear line, easiest to figure out.
I can get more details if you want specific locations. let me know, I took out all the old lines and replaced all front lines, easier and made room for lines to fit thru.

GJ750_WV

Thanks got it from a friends truck....


Got it...

Master cyclinder front line goes to the abs module under the drvr truck frame looking toward the rear vehicle directly at the fittings

Master cyclinder rear line goes to the above left side abs modulator.

Looking at the ABS mod-

top 3 rows, left goes to drivers frnt brake-middle passgrs frnt brake-right takes car of the rear disks brakes.


Hope this helps someone. Now to figure out how to bleed after changing all the corroded lines.

Anyone know how to do this? Been hearing there is issues with the air in the modulator/ABS??????????/

THanks

tecate1987

I did mine the same as normal.

I started with the back furthest from the master, right rear, then left rear, front right, the front left. I had to go thru the process 2-3 times to get out all the air. seems good.