Brake line diagram - SOLVED

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shegarty

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Looks like this: https://www.rockauto.com/en/moreinfo.php?pk=1416050&cc=1424191&pt=679&jsn=939&jsn=939 ABS Modulator Valve

The other choice does not look the same and if is the other choice you would have a JL4 RPO code. That would mean you have active brake control and would likely have the master cylinder with a spout out the front of it. Mine has all that with the hydro-boost system.

Is your rig a 1/2 ton or 3/4 ton?
1/2 ton ... that looks like the part but I just need the line that runs to it from the dist block. I got a kit that I'm going to check to see if it contains the right hose.
 

OR VietVet

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I looked and looked for the line/hose from that ABS Modulator Valve but could not find. That 8 digits should get @915_Tahoe's attention. He will be the one to help you. I am going to look at GM parts too and get back to you.
 
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shegarty

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I was able to find the hose in a kit. I'll take out the other two short hoses from the master to the dist block. Got the hose replaced but the braking system will not engage now. Lights on brake and Trac control as we as service brake system light. Too much air in the system? I filled the line before securing the connections. Aside from cracking a connection how do I bleed this?

Nothing shows up in a basic OBDII scan. Should I try a hard reset by disconnecting the battery?
 
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shegarty

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OR VietVet

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  • 46c3caf1e03b0c08c7162275565ce890.png
    0471109c67086bff1c77f2cd345f461f.jpg
    8de078df22e1dcfc25c072efecb7f4d7.jpg
    fe8e803f9776a80916fdf34c11655b5d.jpg
    15181253
    PIPE, FRONT BRAKE COMBINATION VALVE
    • Fitting Vehicle Options:
      CK1(06-36)(JH2)
    $65.44$34.68
    Add To Cart
  • 0fd799bb133c12b6ee4e929e7ad21268.png
    0471109c67086bff1c77f2cd345f461f.jpg
    8de078df22e1dcfc25c072efecb7f4d7.jpg
    fe8e803f9776a80916fdf34c11655b5d.jpg
    15181253
    PIPE, FRONT BRAKE COMBINATION VALVE(INCLUDES 3)
    • Fitting Vehicle Options:
      CK1(06-36)(JH2)
    $65.44$34.68
    Add To Cart
  • 0c54dc6498c2ef0346ce22cbd71f8085.png
    7361097d7c7e4aa282823ce778a04e94.jpg
    15181254
    PIPE, REAR BRAKE COMBINATION VALVE
    • Fitting Vehicle Options:
      CK1(06-36)(JH2)
    $65.44$34.68
    Add To Cart
  • 32436f3c299de71cf62099ecf4717c23.png
    7361097d7c7e4aa282823ce778a04e94.jpg
    15181254
    PIPE, REAR BRAKE COMBINATION VALVE(INCLUDES 3)
    • Fitting Vehicle Options:
      CK1(06-36)(JH2)
    $65.44$34.68
    Add To Cart




  • *******************************That looks like these on the other link I sent you from GM Parts Giant****************************
 

TollKeeper

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I was able to find the hose in a kit. I'll take out the other two short hoses from the master to the dist block. Got the hose replaced but the braking system will not engage now. Lights on brake and Trac control as we as service brake system light. Too much air in the system? I filled the line before securing the connections. Aside from cracking a connection how do I bleed this?

Nothing shows up in a basic OBDII scan. Should I try a hard reset by disconnecting the battery?
This will require a high end scan tool, you will have to activate the ABS pump, and continue bleeding. Its a long process. The entire system, all calipers, and ABS pump, and everything need to be bled.
 
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shegarty

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This will require a high end scan tool, you will have to activate the ABS pump, and continue bleeding. Its a long process. The entire system, all calipers, and ABS pump, and everything need to be bled.
This is what I was afraid of. So it's likely a trip to a shop that can bleed the system for me then.
 
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shegarty

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I think all of these are for the master to dist block. Here's the offender here
 

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