Traction control/stabilitrak off issue

[Marioski]

Nice job! Hopefully that cures the problem and the electrical gremlin goes away. All I know is that on these trucks if there is any voltage drops they start doing all sorts of weird things

As far as the Airaid tube popping off, I wonder if it's weather related and attributed to the colder temps. I'm going to have to do a google search on that.


Sent from racephone

 

[TheFuzz]

Me too! The CEL and traction control lights going away is typical after you pull the battery cable though...for a day or so. At least that's how long they've taken to reappear in my case. The P0172 and P0175 codes (banks 1 and 2 too rich) take a while to register because the computer tries to compensate. When it can't compensate any longer, it throws the code. If I get through the next couple of days without any issues, then I'll break out the champagne.

Thanks for the tips on the cables, I really hope that did it.

 

[Marioski]

Hell mine came back almost immediately. Plus when my stabilitrack/service 4wd would flicker on / off, everytime it was on the trans would have a very hard shift from 1st to 2nd. It was def an electrical gremlin and I figured it's either a bad ground, bad positive connection or a bad connection somewhere by the body control module.

I've been going good since Saturday morning and have put about 300 miles since then.

It'll be interesting to hear your update.


Sent from racephone

---------- Post added at 11:12 PM ---------- Previous post was at 11:07 PM ----------

Huh. Interesting. Quick google search yielded these results for the MIT tube popping off. Seems it's common. Interesting

http://www.silveradosierra.com/vortec-5-3l-v8/airaid-mit-is-popping-off-t79538.html

And this one.

http://www.silveradosierra.com/vortec-5-3l-v8/airaid-mit-t72410.html




Sent from racephone

 

[TheFuzz]

That's why I thought it was an intake problem or an intake leak - the hard shifting is part of a "safe mode" that the computer goes into when the MAF is disconnected or there is a vacuum leak. My '00 Yukon did the exact same thing when I installed an AEM Brute Force on it but forgot to plug the MAF sensor harness back in. If there is un-metered air getting into the motor, the computer flips out and maxes out the line pressure resulting in crazy shifts (I didn't have the stablitrak off/traction control issues on that truck because the 2000's didn't have either system...but I'm sure that it's all part of a cascading system shutdown to prevent engine/trans damage when something isn't working correctly).

So, based on that experience, naturally I thought that the whole thing was caused by the intake tube popping off and causing a massive vacuum problem. When the issues came back even with the intake put back on correctly, it threw me for a loop. If polishing up the battery/fuse connections really does do the trick, I haven't a clue as to why. The whole thing starts with the airaid tube popping loose, and is fixed by messing with the battery cables? It's a strange problem, to say the least. Great to hear you've gone so long without having an issue though, that is really good news.

Gotta love computer controlled trucks.

ETA: Might be selling my Airaid and shelling out the dough for a Volant. Sheesh.

 

[Marioski]

Ah... I figured it was some sort of safe mode that the truck was going into but glad it's confirmed now.

You're right, any rich or lean code is always a vacuum leak. Could be something minor like a loose line down a to a cracked plastic manifold. It's just interesting that I have ran the MIT tube for several months now with no issues and all of a sudden it popped off.

Sent from my iPad using Tapatalk HD

 

[TheFuzz]

Well, back to the vacuum leak theory. Codes/warning lights came back immediately on my way to work this morning. I'll be chasing it down this weekend if I have time.

 

[felixgun]

Shit... I'm having the CEL/Tracking Control/Stabilitrak issue, along with the hard shifting... hopefully it's just the loose intake tube that's creating a vacuum leak.

 

[SmallXL]

Yup, my airaid popped off as well... grrr.

Threw the lean condition code. Makes sense as it's getting too much air to compensate for fuel at the MAF?

Re-connected and everything was okay after reset.

Could be reading rich until it relearns the actual condition with it connected? Did you re-connect the re-circ/vacuum line?

 

[TheFuzz]

If you're referring to the line that runs from the center of the tube to the passenger side of the engine, it never came loose...just the tube itself popped off at the throttle body.

 

[zunman]

After hard down shifting issues in tow haul mode when the truck is cold, and also the same traction control and stablitrac service alarm on the display, I ended up finding my 3/8 tube from the tube to the intake manifold on my cheap ebay aluminum intake was dry rotted and disconnected (after it was at the dealer for trouble shooting the tranny issue) They said the truck shifted fine too…. I replaced the line and it has not had the alarm again in 20 miles, I have not driven it in the cold to see if it is down shifting hard yet tho. Hopefully the tube was it, it was also throwing the 2 lean codes like you all are speaking of! Check for a vacuum leak!!!!!