Well.... pulled into the bank drive-up window the other day and QS shut down. Shut off engine, restart and QS back on again. Only 227 miles on the clock.

Whatever software version was installed in early March-built truck has not resolved this persistant problem.

Truck is a joy to drive otherwise and I have no regrets in having bought it, but GM foot dragging in acknowledging and fixing problems across the board is a big reason they continue to lose money and market share. No indication this is about to change.

I will be keeping a log and reporting every failure to dealer although I am not enough of a masochist to bring it in until I have good reason to beleive they will actually FIX something.

Damn, Rip, that pisses me off I'm sorry to hear you still have it .

Man, GM freaking sucks !!!!!! Along with killing the program, dragging their butts marketing it, blaming everything but themselves and their greed for the so-called "lack of saturation", at the very least...

GIVE US THE FREAKING UPDATE !! AND ESPECIALLY ON THE NEW MODELS !!!

How lame is that ?!!? Rip, the tsb is posted here somewhere. I'll try to find it. Tell the dealer to fix it ...

Well, enjoy the ride despite the glitch. It's more an annoyance than anything.

Knowing the fix is available but unknown through out the network is infuriating

Here's the TSB.

This message has been edited. Last edited by: MrQuadrasteer,

Thanks for the response Eric. While this was the first (and so far only) time I have had this problem on my new truck, it sounds just like what several others have been experiencing for a while. (about 380 miles so far)

The TSB you refered to does not give the circumstances that trigger the error, and SHOULD already have been incorporated into what was programed into my BCM at build date. So either this TSB addressed other causes/symptoms, or is perhaps an improvement but not a cure for whatever caused my shut-down.

In any event, I will be noting any future occurances in light of the above. It is also a pain that the indicator lights are way over on the right out of the drivers normal line of sight. As it is, you may not notice the instant the lights begin to flash and only look over when you get the first physical hint that the truck is not reponding as expected (such as jumping a curb or worse).

I seem to recall someone on this site or another mentioning a site where one could check and compare what latest flash versions were applicable to a particular VIN. If this is possible, I could at least see if I already have the "latest" or if there is in fact a newer version available.

Like I said before, I really do like the truck with the Quadrasteer... just wish I could really relax and enjoy it without concern as to when it will shut down next.

About the indicator, it should also flash in the DIC window Maybe it goes back after a few seconds ??

Well, get after the dealer right now. Bug him everytime it does it. Call him the day of, and follow-up for 2 or 3 days after. He'll get tired of hearing ya after 'while . Wear him out !!!

Yeah, the DIC also flashed the message, but I only noticed it after the flashing 4 & 2 over by the switch. When you are doing a close quarter maneuver you are generally not looking at the dash anyway.

I'll keep on the dealer regarding this as well you can be sure.

RIP,

This sounds like the problems on the 04 Burb. Chevy did replace my 04 with an 05, but alas the service 4 wheel steer light still comes on.
As for me, I have been in a q-steer for almost 12 months, I think in my case it is my "hurry" to get going at start up that causes the system fault. If i wait until all the warning lights cycle off at start up I almost never have a problem. Possible execptions, the lights do flash between 2ws and 4ws when I am going into 4 wheel drive esp low range. Also if I put the Burb in neutral and roll just a few feet and turn the wheel the same thing with the lights.
I was told the the Burbs were more prone to the service 4 wheel steer light, maybe that is not the whole truth...
For me I just have to be patient at start up and that seems to work for now.
Will let your know if I hear any new info from my dealer or Delphi.

Abe

When in NEUTRAL in any model QS, the system ALWAYS reverts to 2WS. Earlier models, I think, stay in 2ws until you punch 4ws, the later models automatically go back to whatever mode they were in when you drop back in gear...

As far as Burbs being more prone to the fault, I haven't heard that and can not imagine why that'd be the case

Abe, Thanks for your input.... due to I think your earlier postings I have made a point NOT to touch the steering wheel until the DIC and other warning lights finish their little light show at start-up. Luckily this seems to take less time than my '01 Tahoe did and I have (so far) not had the QS shut down occur at start-up.

In my case I had been driving for a while and pulled into a bank drive-up window (narrow lane and sharp corners as many are). After putting my deposit in the drawer I noticed the lights flashing and then the DIC message. Shut the engine off, restarted, and back to normal.

While it seems that a variety of things have caused the system to revert to 2WS mode in the past, one-by-one GM/Delphi have cured most and improved others. From reading between the lines, one of the fundimental underlying problems seems to be data communication - raw speed and/or conflicts with other data on the same buss.

While there are various techniques engineers/programers sometimes use in these situations, this one may be a bit trickier in that it has to maintain syncronization between absolute front wheel position and rear. This does not mean unsolvable, just that it may involve more than the ususal coordination between GM/Delphi in terms of the best solution.

My only hope is that they have really been working hard on this for a good while and not just sitting on it, because it is not going to go away by itself.

Did you say Chevy REPLACED your '04 with an '05? Was it for this problem alone? Other than your "hands-off" procedure at start-up did any of the previous up-dates and/or fixes affect your vehicles? Glad to hear someone went all the way in a serious effort to resolve your issue(s).

Once again, thanks for your observations and comments and hope for the best for you and your 'Burb. Happy Q-Steering!

PS I went to VPI, Class of '73

Eric & Abe, Thanks for the tip regarding 2WS default mode when T-case going through Neutral. Good to know.

Another little bit of info not in the owners manual (and I actually read them!!).

PS: Eric, I assumed you were also refering to the T-case and not the transmission?

This message has been edited. Last edited by: Rip,

Honestly, no, I wasn't talking about the t-case, and if I had to guess, I'd say NO, the t-case wouldn't do that, only the trans. But I ain't 100% on that...

I'll ask Kevin next time I talk to him

I just checked, and if you pause the trans in Neutral for several seconds, both QS 2 & 4 lights will illuminate. but 4 will come back on after shifting to a gear within a few seconds without any manual intervention.

Shifting the T-case into 4WD LO also requires shifting the trans to Neutral, so this may be what Abe is seeing. So long as it reverts to previous selected mode on its own, does not seem like a problem. (No error message in DIC either)

Ohhh, okay, I didn't even consider you had to shift in neutral to shift the t-case. Duh... yup, that would do it !!!

I can still make mine do it in any parking lot with a rapid steering wheel turn.

Should I visit the dealership to have the new software put in, or is that futile?

Thanks guys. Sorry I haven't been by for a while.

John, nice to see ya around

The *fix* is supposed to cure it, but as you know, it's more an irritant than any real safety or functional issue...

Mine still won't do that.

We'll see once I get it back :rolloeyes: