"Stability Sysytem Disabled" 2006 GMC Yukon

[sweets1]

"Stability Sysytem Disabled" on my dash, brake pedal goes all the way to the floor.Brake light warnig as well. Checked the brake fluid in the master cylinder, it's full no visible leakage. I dont know how to check for codes. Should I just bring it in for repair? Any suggestions welcomed. This just happened.

 

[mindless1]

You can either learn how to check codes (though if it is a GM-specific code like ABS, it may have no OBDII code for it and need a GM specific/capable scan tool), or take it in for diagnosis and then decide if you or they are going to repair it.

Don't drive it with the pedal going to the floor.

 

[sweets1]

You can either learn how to check codes (though if it is a GM-specific code like ABS, it may have no OBDII code for it and need a GM specific/capable scan tool), or take it in for diagnosis and then decide if you or they are going to repair it.

Don't drive it with the pedal going to the floor.

I may be wrong but the shop I took it too to check the tire may have inadvertently loosened a brake line. The brakes felt spongy the day after. Before I change the master cylinder I want the brake lines bled

 

[mindless1]

Why would you not have shared this info already? Yes, certainly if some work has been done on the vehicle then you should consider the impact of that and bleed the brakes.

 

[sweets1]

Why would you not have shared this info already? Yes, certainly if some work has been done on the vehicle then you should consider the impact of that and bleed the brakes.

Because all they did was remove a bad tire and replace it with a spare. The brakes coincidentally now go to the floor. It could be as simple as bleeding the system or as bad as replacing the master cylinder. They're not going to admit to messing with the brakes

 

[mindless1]

Okay but the moment you let someone else touch your vehicle, all logic goes sideways on what they could do wrong so it is important to mention that the problem happened right after work being done.

Unless they were under the hood, there is nothing that should have damaged the master cylinder. Then again there is nothing about changing a wheel that should have let air in the system either, but working vehicle + someone touching it = very suspicious.

Regardless either you can try bleeding the brakes or it needs towed or a mechanic called to the site to avoid a towing charge, which might be a good option if it just needs brakes bled. This is something a mobile mechanic can do without additional parts, or for your common vehicle, a local auto parts store probably has anything needed.

 

[sweets1]

Okay but the moment you let someone else touch your vehicle, all logic goes sideways on what they could do wrong so it is important to mention that the problem happened right after work being done.

Unless they were under the hood, there is nothing that should have damaged the master cylinder. Then again there is nothing about changing a wheel that should have let air in the system either, but working vehicle + someone touching it = very suspicious.

Regardless either you can try bleeding the brakes or it needs towed or a mechanic called to the site to avoid a towing charge, which might be a good option if it just needs brakes bled. This is something a mobile mechanic can do without additional parts, or for your common vehicle, a local auto parts store probably has anything needed.

Ive always found bleeding brakes to be a two man job. One to step on the brake pedal the other to let air out at each wheel cylinder and I dont have my dad around anymore to do that with. I wonder if I can get a shop that will do as I ask and bleed the brakes first instead of just selling me a new brake master cylinder

 

[mindless1]

If you get a mobile mechanic on site, you have two people including yourself, if s/he doesn't have a kit that makes it one person, or you can buy (~$8 and up on Amazon) (or make w/parts) the kit and DIY, and there are youtube videos, search "one person brake bleed".

You can do it with nothing special, just a length of tubing that slightly stretch-fits over the bleeder nipple for an air-tight fit, into a jar (all the way to the bottom) with some fluid already in it, and a length of wood or pipe sized appropriate to put between the brake pedal and the seat to hold the brake pedal down while you go to loosen and tighten the screw.

It helps if the jar has a lid with a hole drilled in it that's a tight enough fit to hold the tubing in place, and a 2nd hole to equalize pressure. It is easier to just watch the videos than to describe it.

one person brake bleed - YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

There will be shops that try to sell you parts you don't need but this is more a matter of selecting a trustworthy shop.

 

[sweets1]

If you get a mobile mechanic on site, you have two people including yourself, if s/he doesn't have a kit that makes it one person, or you can buy (~$8 and up on Amazon) (or make w/parts) the kit and DIY, and there are youtube videos, search "one person brake bleed".

You can do it with nothing special, just a length of tubing that slightly stretch-fits over the bleeder nipple for an air-tight fit, into a jar (all the way to the bottom) with some fluid already in it, and a length of wood or pipe sized appropriate to put between the brake pedal and the seat to hold the brake pedal down while you go to loosen and tighten the screw.

It helps if the jar has a lid with a hole drilled in it that's a tight enough fit to hold the tubing in place, and a 2nd hole to equalize pressure. It is easier to just watch the videos than to describe it.

one person brake bleed - YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

There will be shops that try to sell you parts you don't need but this is more a matter of selecting a trustworthy shop.

I know how to bleed brakes. You stick a length of rubber tubing on the bleed valve the other end in a coke bottle immersed in brake fluid. Open & shut the valve while someone else steps on the brake pedal. You shut the valve when nothing but fluid comes out the tubing no bubbles of air. Start at the furthest from the master cylinder and work your way till your closest to the master cylinder. I've done it with a piece of wood wedged against the brake pedal and the seat But it's best done with two people

 

[mindless1]

At some point only you can help yourself. You don't need the "best" way to bleed brakes, just an effective way.

There are many youtube videos of people doing one-man brake bleeds. Pick whatever works for you, or pay someone. It's not that difficult a decision.

 

[pcgeek11]

You have ABS Brakes you may need to pulse the ABS Solenoids using a scanner to get the air out of the ABS System.

Judging from the message I think you need to bleed the ABS System.

 

[sweets1]

I understand that this vehicle the GMC Yukon has a history of rusting brake lines