2001 Sonoma Brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**rharris** · 11-12-2023, 05:51 PM

The MC most likely went empty due to a blown line. I replaced the line and can not build pressure. I have clean fluid at all four corners when vacuum bleeding. I bench bled the MC and still cant get any pressure at the pedal. Any help would be appreciated. I'm suspecting ABS module has air, but I don't know how to bleed that, and im pulling fluid through it to get it out the bleeders. Stuck

**special-K** · 11-13-2023, 08:29 AM

I'm a newbie with these trucks and anything this new. But I think you are correct that it's the ABS module hanging you up. I ran into the same problem bleeding my son's '08 Toyota Xrunner. But I don't remember how we worked that out. Hopefully someone will have your answer

IIGW · 11-13-2023, 11:24 AM

Quote:

Originally Posted by rharris

I'm suspecting ABS

google will tell you that you need a tech ii or equivlent to cycle the abs module to bleed the brakes. There is really no other way to do it. Been this way for nearly 30 or so years now.

11-12-2023, 05:51 PM	#1
rharris Senior Member Join Date: Apr 2013 Location: Pottsgrove PA Posts: 560	2001 Sonoma Brakes The MC most likely went empty due to a blown line. I replaced the line and can not build pressure. I have clean fluid at all four corners when vacuum bleeding. I bench bled the MC and still cant get any pressure at the pedal. Any help would be appreciated. I'm suspecting ABS module has air, but I don't know how to bleed that, and im pulling fluid through it to get it out the bleeders. Stuck __________________ 72 Cheyenne Super C10 SWB 2001 Silverado 1500HD Crew 2011 Silverado 2500HD Crew Duramax (Hers)

11-13-2023, 08:29 AM	#2
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: 2001 Sonoma Brakes I'm a newbie with these trucks and anything this new. But I think you are correct that it's the ABS module hanging you up. I ran into the same problem bleeding my son's '08 Toyota Xrunner. But I don't remember how we worked that out. Hopefully someone will have your answer __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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