Service Stability track and traction control

[Amaster]

Okay so today after I got my turbo 350 in the back seat of my 2011 Yukon XL, I went to go pull out of the storage unit area where I'm keeping the car that the transmission goes into, and all the sudden at the exit the traction control light lights up like a christmas tree star. With the DCM also saying traction control and stablitrak off service those two things as well. Then not even 5 mins later it goes away! Well it kept doing this about everytime I went over a really big bump, and, when it was about time to go to my local auto parts store the thing felt like it had manual steering! Then the engine completely stalled. Luckily I was able to drop off my turbo 350 to the shop, and get it home without the light coming on to often. While at my house I tried looking at with my tech 2 but unfortunately looks like I paying for the fee. But I also have to figure out how to make it stop saying check ignition. Any thought's would be appreciated!
A.

 

[avalonandl]

Loose ground wire/cable or battery connection. When you lose volts temporarily like that service stabilitrak is the firs warning light.

 

[wsteele]

I agree with the above. In addition, lots of things trigger the TC/ST off status. Something as simple as brake fluid being too low in the MC will trigger such notices (although you would also get the brake warning light as well in that case), but the point is, many things trigger this, most with little to do directly with TC/ST.

 

[Doubeleive]

connect the tech2 and drive around, when the warning comes on then scan it with the tech2, you do not have to pay any fee to use the tech2 for this issue, it's probably a loose connection somewhere, that particular type of code is not necessarily historical so you have to scan it while lit. otherwise it passes self testing and goes away just like abs/srs.

 

[Amaster]

connect the tech2 and drive around, when the warning comes on then scan it with the tech2, you do not have to pay any fee to use the tech2 for this issue, it's probably a loose connection somewhere, that particular type of code is not necessarily historical so you have to scan it while lit. otherwise it passes self testing and goes away just like abs/srs.

Okay, so I think I got part of what is wrong. I read something about failed to boost brakes. Does this mean the brake boosters going out? By chance could it just be hot it has been very hot lately.

 

[wsteele]

Okay, so I think I got part of what is wrong. I read something about failed to boost brakes. Does this mean the brake boosters going out? By chance could it just be hot it has been very hot lately.

Can you retrieve your DTC codes with your Tech 2?

 

[Fless]

Okay, so I think I got part of what is wrong. I read something about failed to boost brakes. Does this mean the brake boosters going out? By chance could it just be hot it has been very hot lately.

It means you should post up the code(s) you get when it happens. "...something about failed to boost brakes..." doesn't give us much to go on. We could guess well into the night.

 

[swathdiver]

Okay so today after I got my turbo 350 in the back seat of my 2011 Yukon XL, I went to go pull out of the storage unit area where I'm keeping the car that the transmission goes into, and all the sudden at the exit the traction control light lights up like a christmas tree star. With the DCM also saying traction control and stablitrak off service those two things as well. Then not even 5 mins later it goes away! Well it kept doing this about everytime I went over a really big bump, and, when it was about time to go to my local auto parts store the thing felt like it had manual steering! Then the engine completely stalled. Luckily I was able to drop off my turbo 350 to the shop, and get it home without the light coming on to often. While at my house I tried looking at with my tech 2 but unfortunately looks like I paying for the fee. But I also have to figure out how to make it stop saying check ignition. Any thought's would be appreciated!
A.

Fee? No cost to use your tech-2 unless you need to program modules. You do not even need it as a pass through device, hook it up directly to your truck and scan for codes on the main menu, last option. It will query every module and then at the end display all the codes. Be sure to write down the symptom number as well.

 

[Amaster]

Fee? No cost to use your tech-2 unless you need to program modules. You do not even need it as a pass through device, hook it up directly to your truck and scan for codes on the main menu, last option. It will query every module and then at the end display all the codes. Be sure to write down the symptom number as well.

Thanks Swathdiver I guess I'm still learning how to use it lol. I did unfortunately get a CEL when I went out to check traction control codes, it was P0106 MAP Sensor fault god looks like I'm taking her in for that warranty.

 

[Doubeleive]

Thanks Swathdiver I guess I'm still learning how to use it lol. I did unfortunately get a CEL when I went out to check traction control codes, it was P0106 MAP Sensor fault god looks like I'm taking her in for that warranty.

a map sensor runs about $25 plug-n-play, most likely not related to the stabiltrac problem, a failed brake booster issue would be more likely to cause a stabiltrac/traction control issue, whatever message you read should have had a code in front of it. like Bxxxx.01, .02, .03 etc the first part being the main culprit and the .xx being a more defined cause

 

[Amaster]

Fee? No cost to use your tech-2 unless you need to program modules. You do not even need it as a pass through device, hook it up directly to your truck and scan for codes on the main menu, last option. It will query every module and then at the end display all the codes. Be sure to write down the symptom number as well.

By chance is it the last option in the diagnostic menu cause I couldn't find it in the first menu?

 

[swathdiver]

By chance is it the last option in the diagnostic menu cause I couldn't find it in the first menu?

I forget what they are called, it's the last option where you can choose the Engine, Body Control, Chassis and the ZZZ options. You want the last one, ZZZ, that I always forget the name to!

 

[Amaster]

I forget what they are called, it's the last option where you can choose the Engine, Body Control, Chassis and the ZZZ options. You want the last one, ZZZ, that I always forget the name to!

It's fine truck went into limp mod the other day when I went and replaced the map sensor it was bad. Got another light and read the code as throttle cable fail. That's what both my Tech 2 and OBD 2 Scanner says. I know it's probably not what's happening with the traction control. But not a big deal already got an appointment setup to bring my truck in and get it repaired. Just kinda sucks that this happened only after about 4 months of ownership.

 

[fozzi58]

My Avalanche used to throw the TCS and Stabilitrack warning when my brake pads got low. Happened a few times. Those dash lights went berzerk when I had a seized rear caliper.

 

[robgreg75]

If your brake lights are stuck on at that time it is the brake switch under the dash or in my case after a massive hit by someone that totaled mine that I am still driving it broke a small wire going to the brake switch that I had to find.

 

[Trilla_one]

Before I pull the trigger on buying a tech 2 I wanted to ask you guys for some advice on my TC/ST issue. Similar to everyone else I get it intermittently but whenever it's active on the dcm I get hard shifts especially from 1st to 2nd. I know some people experience theirs in conjunction with other lights
such as abs etc. Anyone else ever had my combination let me know

 

[Geotrash]

Before I pull the trigger on buying a tech 2 I wanted to ask you guys for some advice on my TC/ST issue. Similar to everyone else I get it intermittently but whenever it's active on the dcm I get hard shifts especially from 1st to 2nd. I know some people experience theirs in conjunction with other lights
such as abs etc. Anyone else ever had my combination let me know

The only way to know is to pull the codes from all of the modules and see what you've got going on. My guess is either a bad ground or a bad battery causing intermittent faults to show up, which would show up as a bunch of seemingly random codes getting thrown.