Why did this happen?

[mdoyle]

We had some decent snowfall preceded by ice here in Kansas so I decided to see how the traction was on the H2. On an empty stretch of road I did a 180? and my traction control and ABS lights came on and stayed on.

I put a code reader on and erased the code and it didn't return but I have to wonder, did I confuse the system or worse, mess something up?

[Captain of the Titanic]

I also had something similar happen in my '06. I was dorking around in some slimmy mud with a friend doing donuts and generally getting the Hummer as dirty as I could, when my ABS light came on and the truck started free-spinning the tires. It seemed like the traction control had completely shut off.

I did some more spinning and such, and later shut the truck off, which reset the ABS light, and the traction control and ABS seem to be working fine now.

I chalked it up to Hummer being smart enough to realize I was playing around and really didn't need the Traction control and ABS on, but I never really looked into it further.

BTW, it's been working fine for 6 weeks or so since then, so I don't think you'll have any problem in the near future.

Anyone else have this happen, and does anyone know why it happens?

[Poopy]

Originally Posted by Captain of the Titanic

I chalked it up to Hummer being smart enough to realize I was playing around and really didn't need the Traction control and ABS on, but I never really looked into it further.

Ya thats probably it....... Why would you want traction while your wheeling anyways.

[h2co-pilot]

Originally Posted by Poopy

Ya thats probably it....... Why would you want traction while your wheeling anyways.

DEE DEE DEE! Is the McDonalds morning shift over already?

[Poopy]

Originally Posted by h2co-pilot

DEE DEE DEE! Is the McDonalds morning shift over already?

Wow, it must be early down south, maybe after you, ma, and sis get it on, you'll be awake enough to give me a new witty insult.

[h2co-pilot]

Originally Posted by Poopy

Wow, it must be early down south, maybe after you, ma, and sis get it on, you'll be awake enough to give me a new witty insult.

It wasn't an insult, I was mildly excited you came back for more sorrowful ownage.

Do you want to discuss the importance of traction while wheeling?

[Captain of the Titanic]

Originally Posted by Poopy

Ya thats probably it....... Why would you want traction while your wheeling anyways.

I wasn't wheeling... See:

"I was dorking around in some slimmy mud with a friend doing donuts and generally getting the Hummer as dirty as I could"

[f5fstop]

Originally Posted by mdoyle

We had some decent snowfall preceded by ice here in Kansas so I decided to see how the traction was on the H2. On an empty stretch of road I did a 180? and my traction control and ABS lights came on and stayed on.

I put a code reader on and erased the code and it didn't return but I have to wonder, did I confuse the system or worse, mess something up?

What was the code; C0245 (usually the one)?
If so, yes, you have confused the system. Since the system is looking to see a wheel speed sensor signal different than the other three, and you happen to be on glare ice or another type of extremely slippery surface, the EBCM sees some strange signals and cannot determine which, if any, wheel sensor is bad. So, it warns you that it has shut down the ABS/Trac system.
Under normal slippage it won't do this, but sometimes when doing donuts, the wheels speed sensors are sending out some strange signals to the computer.

[PARAGON]

ie - one tire going backwards while the other tires are spinning forwards

It's a safety feature. You obviously know if you were doing something "different" when it happened, the computer doesn't. All it knows is it was getting some screwy data from the wheels speed sensors and can't properly control the truck using the ABS/TCS so it shuts down to be safe

[mdoyle]

Thanks for the replies guys, good to know it's normal behavior.

FWIW the next day on a slick road the "traction control active" message came on so it seemed to be working correctly.

[sj-x 500]

Originally Posted by PARAGON

ie - one tire going backwards while the other tires are spinning forwards

It's a safety feature.

sorry to burst your bubble but it's impossible to judge a direction with abs.

a tone wheel and sensor pickup simply see pulses, which when calibrated into a PPM give you a speed, not a direction.

you simply spun out and didn't back out of the skinny pedal, much like the new gm cars do when you try to do a burn out without turning off the tcs. it's confused because it was overwhelmed by why anyone who would like to spin half their tires that much without going anywhere.

[PARAGON]

Originally Posted by sj-x 500

sorry to burst your bubble but it's impossible to judge a direction with abs.

a tone wheel and sensor pickup simply see pulses, which when calibrated into a PPM give you a speed, not a direction.

you simply spun out and didn't back out of the skinny pedal, much like the new gm cars do when you try to do a burn out without turning off the tcs. it's confused because it was overwhelmed by why anyone who would like to spin half their tires that much without going anywhere.

OK, dufus.

Nice attempt. When a tire goes backwards.... what does it do? It stops going the direction it was supposed to go, goes backwards.

Idiots, No, NO. There's no way they would program to allow for wheelspin

[Poopy]

Originally Posted by PARAGON

OK, dufus.

Nice attempt. When a tire goes backwards.... what does it do? It stops going the direction it was supposed to go, goes backwards.

Idiots, No, NO. There's no way they would program to allow for wheelspin

I think what he is saying, is that there is a sensor, it senses a pulse when the magnet or whatever it is goes past the sensor. It has no idea if its going forwards of backwards, its just passing a sensor. Lets go to a simpler example for you. Picture the speedometer you have on your road cycle, when you got the kid at the bike shop to install it he put a little magnet on your wheel and a sensor on your forks somewhere.

[sj-x 500]

Originally Posted by PARAGON

OK, dufus.

Nice attempt. When a tire goes backwards.... what does it do? It stops going the direction it was supposed to go, goes backwards.

and the computer keeps seeing pulses. a pulse is a pulse. obviously this is over your head, keep trying though, you're getting the idea of how **** actually works. just gotta work on this crawl ratio concept next.

[h2co-pilot]

The Traction Control System continually monitors the rotational speed of each wheel. If one wheel is spinning more than the others, the Traction Control System applies braking pressure to the spinning wheel to help it regain its composure and transfers available torque to the wheels that have traction. It also has a glitch in the system to allow more than usual slippage when needed to paddle through something.

[sj-x 500]

Originally Posted by PARAGON

ie - one tire going backwards while the other tires are spinning forwards

the computer still sees speed. not direction. if one is going backwards then it just sees it as going x mph. not fowards nor backwards.


you sure do like to backtrack. you don't understand a question so you assume it's flawed. paragon for prez.

[PARAGON]

Originally Posted by sj-x 500

the computer still sees speed. not direction. if one is going backwards then it just sees it as going x mph. not fowards nor backwards.


you sure do like to backtrack. you don't understand a question so you assume it's flawed. paragon for prez.

you are trying your best to stretch this into what?

You are trying to say I'm wrong about something when I'm not. Hell, sport, I'm wrong plenty enough for you to try and pick shit where I'm not wrong. Does your inferiority complex extend into your personal life?

You have erectile dysfunction when confronted with a woman, don't you?

[sj-x 500]

no, you're trying to prove you're half right.

you are correct in that the code is being set off by wheel spin.

if you can tell me how the tcs abs can determine direction, i'll stop. but since you still haven't admited that you're wrong in your original post, i see no need to stop. so how about you stop with the worst penis jokes i've ever read, and try to anwser a question.