brake issues 2004 avalanche

Reply Subscribe

Thread Tools

Search this Thread

Dec 18, 2011 | 9:30 AM

#11

curtisj8

Thread Starter

CF Beginner

Joined: Dec 2011

Posts: 13

Likes: 0

Quote:

Originally Posted by EinST

It sounds like a sticking isolation valve (part of the BPMV) which is normally open when the ABS is not active. Consider taking it in for service. You need a scan tool to diagnose the 2004 properly. I've been told that especially the BPMV is nothing to fool with.

appointment is made. see what happens now i guess thanks people

Jan 7, 2012 | 2:33 AM

#12

curtisj8

Thread Starter

CF Beginner

Joined: Dec 2011

Posts: 13

Likes: 0

just a recap on the brake issue. think i found the problem. the guy that had the truck before me must of been a ****ing moron and used power steering fluid instead of brake fluid and it looks like it ****ed over the whole system. so i guess the new question is has anyone ever came across this before and is there an easy fix other then rebuilting the whole brake system. i really dont want to have to sell the first born to pay for it all lol

Jan 7, 2012 | 9:29 AM

#13

EinST

CF Veteran

Joined: Mar 2011

Posts: 1,709

Likes: 4

Oh, that's some tough luck.

Some sort of a vandalism comes to mind (crazy ex?). Hopefully another member has an idea, even where to start with something like that.

Jan 18, 2012 | 1:17 AM

#14

curtisj8

Thread Starter

CF Beginner

Joined: Dec 2011

Posts: 13

Likes: 0

so far just changed the master cylinder and it seems to be fine. hope it stays that way

Jan 18, 2012 | 11:17 AM

#15

EinST

CF Veteran

Joined: Mar 2011

Posts: 1,709

Likes: 4

Thanks for the update.

Keeping my fingers crossed.

Mar 27, 2012 | 11:14 PM

#16

Forge04

CF Beginner

Joined: Aug 2010

Posts: 5

Likes: 0

From: Yelm, WA

I'm hopin for you as well. Hopefully change out fluid and yeah the master cylinder. As long as you don't have leaks at the calipers you're good there.

Keep us '04 owners updated

Jun 29, 2012 | 3:01 PM

#17

spyncycle

CF Active Member

Joined: Jun 2012

Posts: 138

Likes: 4

From: Huntsville, Alabama

Back in the mid 70's a guy I worked with put power steering fluid in his brake system. It ended up eating up every rubber seal. If it were me, I would replace all calipers and the master cylinder.

Jul 6, 2012 | 10:41 AM

#18

spyncycle

CF Active Member

Joined: Jun 2012

Posts: 138

Likes: 4

From: Huntsville, Alabama

Quote:

Originally Posted by curtisj8

ok so heres the latest. went to change the front brake pads. when i went to compress the caliber it wouldnt move at all. not even enough to be able to remove it. i had to release the pressure from the bleeder screw. so is that a slave cylinder issue or something else. would it be possible that would be my problem all along. would thought cause the rest to slowly come on some how

That can be caused by a defective rubber brake line, that connects to the caliper. I saw it happen on a Ford Ranger once.

May 8, 2015 | 6:18 AM

#19

BillBreeze

CF Beginner

Joined: Feb 2012

Posts: 5

Likes: 0

Would appreciate follow-up on brake issue

Hi,
I know that this thread is old, and I've posted only once before to this forum, but I'm having problems with a 2005 GMC Jimmy with much the same problem. The brakes come on while driving. It seems to be all four as the vehicle does not pull to either side. Took it to a GM dealer yesterday they said that the brake fluid was possibly contaminated and that everything with any rubber on it in the brake system would have to be replaced. I bought the vehicle just three weeks ago (it has a month's warranty) and the problem is intermittent. Did replacing the master cylinder and calipers correct your problem? Thanks!