I've purposely been avoiding adding to the discussion until squirrel and I worked through our PMs.

Squirrel - take a look at my last PM. Maybe we could summarize our 3 days of digging and challenging and post a one paragraph summary. I appreciate your time for us to discuss this in detail.

 

Question for you and the other guys here who know a lot about the electronics/computer aspect of this faulty system.
What could be done to permanenty disable this system to the point that it is like the car does not have AHS and TC. Removal of all the sensors and wires? Reprogram the computer to delete everything involving TC AHS? Shut off voltage to the system?
I am willing to take full responsibility for maintaining controll of my car,
and do not want any electronic "aids", with malfunctions.

 

I'm afraid that is beyond me. The system is integrated with the TC and ABS and PCM. I'm not sure of a good way to defeat the AHS system itself. Maybe some of the guys that do tuning might know of a way to calibrate it out???

 

Maxx
While I have not seen the overall system design Im pretty sure that if you disable the AHS system you disable the ABS function which would probably cause the ECU to not allow the car to operate for safety reasons. I could be wrong as I am not all familiar with how GM controls and operates the ABS system for just braking purposes. But with AHS being considered such a critical system my experience tells me that this is a function that if disabled could cause the ECU to disable the car.

The only other thing I can come up with is that a way be found to "tell" the computer that everything is fine much like the CAGS fix that appeared to stop the 1st to 4th shift.

 

I find this hilarious that GM put this crap on the car to cover their buts and now it's becoming a liability. How fitting.
This should be an option box to check off on the order form. GM would be surprised how many customers do not want all these electronic nannys and how many paranoid lawyers they do not need.

But then again, I believe the root cause of this problem is us. The majority of our "society" has conditioned business and their lawyers to be protective of their buts because most people want to blame the product or the manufacturer when there is a problem caused by the end user. Too few people are willing to take full responsibility for maintaining control of their cars. And, the lesson here is that when GM put these "features" in the car, they effectivly took that responsability away from the driver and put it on themselves.

My '07 acted up once while making a slow speed, (<25 MPH), abrupt U turn on a paved surface transitioning to an uneven partial gravel surface with the brakes on moderately. There is no way a programmer or designer could have programmed all these parameters into the sensors. The wheel speed sensors, yaw sensors alone must have wondered what I was doing. I was wondering what the car was doing. Without these "aids", I would have known what to expect during each part of the turn. I talked to my service advisor about it and the "service active handling" message I got. They "ckecked it out" and found nothing. That was 2 1/2 years and 35,000 miles ago. Nothing sinse. We will see.

 

While I agree philosophically about what you wrote, the reality is that this is the way tht it is. Keep in mind that most people who first drive today's Vettes have no understanding about what the real power is of the engines and how quickly it can get away from them. Yes, there are plenty of enthusiats like us that love to play with our Vettes and enjoy the spirited driving aspects. Personally, I love to find where the limits are and most of the time I am rather disappointed that the computer nannies kick it. I don't have a chance to learn what it is I need to do in this particular car. The nannies come in and protect me.

I know I can turn all that stuff off in Competition Mode (and I do this on occassion to have my fun), but I bet the majority of Vette owners don't have 15 years of race experience under their belts, or have owned Vettes for a long enough time to know what they're got under their foot.

Reghardless, having a nanny turn you into an on-coming truck or over the edge of a bridge is not a solution that is a happy medium. Better failure mode software is the right answer, as well as a solid connection between the SWS and the vehicle harness.

 

Liability is one thing but whatever gizmo GM decides to put on the car for whatever reason - IT SHOULD WORK.

 

Best post in this thread...

 

Had the second repair done today 2006 A6 3lt 31900 miles. And I feel confident under the new Government Motors it will now be fixed permanently..

 

11 days after replacing the yaw sensor and no problems yet.

 

month later now with no problems

 

P.S. Some report the problem never returns. Others report that is comes back a year or so later. Glad to hear the issues hasn't returned! Let us know if it ever comes back.

Happy driving!

 

My 05 has only 15,500 miles and it seems as if the active handling alert comes on more often all them time. Is this part of the problem? Usually if I shut the car off and restart the engine the message will go away. It has probably happened five times since I owned the car and I hope it is not a big problem down the road.

 

If the message comes up under "normal" driving situations (not stepping on it in the middle of a turn, not pitching the car sideways, etc.), then yup, you're experiencing the issue. Take it in before the AHS decides to put you into a righthand turn that takes you sailing off a bridge...

 

bterwilliger Im glad to hear you have not had any problems yet. What I would like to know is what is the part number listed on your invoice for the yaw sensor.

I would like to look up the specs for that part and go through the datasheet but I cant do that without a part number. Also it will let me know if the part they put on your car is the same part number that was installed when your car was assembled.

SSS

 

Receipt is in VT and I am in MA for another week. I'll have to ask the missus to look for it between shoe procurement excursions.

 

Thanks inthehunt2 I will continue to monitor the car however the message comes on infrequently and I am going to see if it gets worse. The 97 and 98 C-5 that I previously owned would do the same thing at times therefore I am not in a hurry to take it to the dealership for a check. I have not had very good luck with dealerships and would rather wait and see what happens. I hope I do not go in the ditch. I just cannot understand why GM cannot build a car with better quality. It seems to me they should be able to make a trouble free Corvette however they seem to get worse with every generation.

 

2005 Corvette Coupe (vin)# 1G1YY24U555136700 MOL# THI-VET
I have had my system ignor being turned off even when it say's traction
control off. Also have had in go into a "Need Dealer Reprograming" has
anyone else experienced this? Jack Rice

 

If you want to turn it off pull the fuse and everything goes away. It will not affect the engine.

Bill

 

Last year I went through a 3 or 4 day period where I kept getting DIC messages to "service active handling", "service traction control" and "service ABS". These messages usually started when I backed out of my garage at very low speed since I make a 90 degree turn in reverse to head down my driveway. I always drive with traction control/active handling on. The active handling error light on the dash would also light up. If I shut the car down and restarted, the dash light would go off. Sometimes I would drive the rest of the day with no messages, sometimes they would reoccur. After this few day period I did not experience any futher problems until this past weekend. My '05 1LT has 70,000+ miles now. Last weekend, after driving around town with a friend, I pulled into a parking lot to drop him off. I made a cell phone call while in my car and noticed my friend was doing the same in his car next to me. My car was idling at the time. A few seconds later, I pulled out of the parking lot making a low speed left turn (not sharp) and the right front brake started activating. I held tight to the wheel and straigtened out the car wherupon the sympton subsided. The "active handling" message appeared on the DIC. About 75 feet later I made another left turn, low speed and not sharp, The same thing occurred. Power was down and the car tried to pull me straight instead of making the left turn. Following this the car showed no further symptoms the rest of that evening or the next morning for about 150 miles of driving. While cruising at the speed limit of 70 in a straight line with cruise control on, the "active handling" message came on followed by "cruise disengaged". I felt a very slight braking effect but no pulling. Any suggestions on whether this is the same problem and how to correct this random behaviour?