Need Help Please...i Have No Brakes...ahhhh!!!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bbchevy · 07-31-2004, 12:00 AM

a few days ago i decided to bleed my brakes on my 93 1500. as i started to bleed the rear brakes, no fluid would really come out. my girlfriend said that the pedal wouldnt go down either. i was reading my chiltons repair manual and it said something about needing to hald down a pin or something in the combination valve? well anyway, so brakes worked fine before i started and by the time i was done, i hadn't any rear brakes??!?! none whatsoever. plus on top of that, the pedal hangs out down by the floor now. i can stop, but, yea i dont think i like it this way. scares the **** out of me. now if its the combination valve or whatever, can i just say screw all the random valves and computers and just convert it to a single prop valve and nothing else. ya know, like the older trucks. the normal trucks. aaaahhhh soooo confused! im getting the point where i wanna sell it.... wait no i dont... PLEASE HELP ME!!!!!!!!!!!!

99-2door · 07-31-2004, 06:33 PM

There is nothing special you have to do for the rear brakes. Are you sure you were bleeding it properly? Had to ask.

Z16 · 07-31-2004, 07:33 PM

If you are bleeding brakes on ANY vehicle with anti-lock brakes, it must be pressure bled. There are many small passages in the ABS module that do not bleed with the normal method. This is extremely important. We experimented on my 98 when I changed the master cylinder, and before we pressure bled the brakes sucked. Also remember, that on a lot of ABS vehicles, the pedal will always feel a little spongey. Gotta love all that new technology

bbchevy · 07-31-2004, 07:34 PM

im sure i was bleeding them right because i've done it before on other trucks just like it. and my dad was helping me too... so yea im lost

Z16 · 08-01-2004, 09:19 AM

You can probably find a pressure bleeding system at an auto parts store. I think there are some affordable ones out there. They basically force the fluid thru the system, and that gets the air out of all the small passages in the ABS module.

bbchevy · 08-01-2004, 12:03 PM

cool, thanks alot.... i was actually just looking up pressure bleeders after i read your first reply... so ok ill try that and see what happens. thanks again.

-Scott

07-31-2004, 12:00 AM	#1
bbchevy 87 Wanna Be K30 Join Date: May 2003 Location: long island, new york Posts: 218	Need Help Please...i Have No Brakes...ahhhh!!!! a few days ago i decided to bleed my brakes on my 93 1500. as i started to bleed the rear brakes, no fluid would really come out. my girlfriend said that the pedal wouldnt go down either. i was reading my chiltons repair manual and it said something about needing to hald down a pin or something in the combination valve? well anyway, so brakes worked fine before i started and by the time i was done, i hadn't any rear brakes??!?! none whatsoever. plus on top of that, the pedal hangs out down by the floor now. i can stop, but, yea i dont think i like it this way. scares the **** out of me. now if its the combination valve or whatever, can i just say screw all the random valves and computers and just convert it to a single prop valve and nothing else. ya know, like the older trucks. the normal trucks. aaaahhhh soooo confused! im getting the point where i wanna sell it.... wait no i dont... PLEASE HELP ME!!!!!!!!!!!!

07-31-2004, 06:33 PM	#2
99-2door Registered User Join Date: Oct 2003 Location: Broken Bow, OK Posts: 1,385	There is nothing special you have to do for the rear brakes. Are you sure you were bleeding it properly? Had to ask. __________________ 95 K3500 SRW 5.7L Vortec 4L80e 4.10 G80 2001 GMC C3 6.0 AWD, Volant, 3/5 drop TBSS intake, HP tuners, pullies, 05 efans, 05 front brakes, etc. 2003 Tahoe Z71 Silverado front clip

07-31-2004, 07:33 PM	#3
Z16 Registered User Join Date: Mar 2001 Location: Medicine Hat, Alberta, Canada Posts: 1,508	If you are bleeding brakes on ANY vehicle with anti-lock brakes, it must be pressure bled. There are many small passages in the ABS module that do not bleed with the normal method. This is extremely important. We experimented on my 98 when I changed the master cylinder, and before we pressure bled the brakes sucked. Also remember, that on a lot of ABS vehicles, the pedal will always feel a little spongey. Gotta love all that new technology

07-31-2004, 07:34 PM	#4
bbchevy 87 Wanna Be K30 Join Date: May 2003 Location: long island, new york Posts: 218	im sure i was bleeding them right because i've done it before on other trucks just like it. and my dad was helping me too... so yea im lost

08-01-2004, 09:19 AM	#5
Z16 Registered User Join Date: Mar 2001 Location: Medicine Hat, Alberta, Canada Posts: 1,508	You can probably find a pressure bleeding system at an auto parts store. I think there are some affordable ones out there. They basically force the fluid thru the system, and that gets the air out of all the small passages in the ABS module.

08-01-2004, 12:03 PM	#6
bbchevy 87 Wanna Be K30 Join Date: May 2003 Location: long island, new york Posts: 218	cool, thanks alot.... i was actually just looking up pressure bleeders after i read your first reply... so ok ill try that and see what happens. thanks again. -Scott



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