I picked up a 2005 C6 vette which I believe to be a base model. The car runs good no issues until today earlier this afternoon. I was making a U turn WITH the Active Handling ON and suddentely if felt like the wheels locked up on me. The car would move but after say 10 feet the car felt some kind of resistance was stopping me. The feeling was kind of like if the handbrake was engaged. I got out and there was nothing under my car. I tried to drive again and after 10 feet again the resistance. I then got out of the car turning it off and proceeded to call my dealership. Well I actually did not get through to service however when I turned on the car all was fine. It seems depending on how much I turn the steering wheel and make a turn the same thing happens. Now I'm not sure if the same thing happens under competitive mode but regardless it really got me concerned. Needless to say the car is going back to the dealership to get checked out. I also got the service active handling warning on the DIC. i have never experienced anything like this at all but this can't be good. I just started enjoying my first Vette and this comes up.

Has anyone experienced this at all? Also forgot to add under hard accelleration the car feels like it is misfiring or spudders a bit......Thoughts?

Please help.............

 

Not sure about the engine stuttering issue, that could be alot of things. On the active handling issues my bet is a wheel sensor connector is loose.

 

Someone else suggested the wheel sensor also so it may just be that. I hope the dealership can help me which they are working with me on this. I hope I can replicate it when I'm with the techs.

 

I'm pretty sure this is normal when the wheel is FULLY CRANKED in one direction or another. Both my C6s do this and I think it has to do with the width of the tires compared to the steering wheel angle. The tires' slip angle can't match the angle of the steering wheel. This has been brought up before here so try a search. Back off the wheel from full crank to something a little less and see if the problem goes away. Good luck on your new 05'. I have one also and it's the best built car I've owned.

 

Cars with wide tires have alot of rolling resistance when sterring is at full left or right. The tires roll straight just fine, but when going slow I noticed that my vert will stop on level groung when turning sharp without any use of brakes. My husbands z06 (with wider tires) stops faster in same conditions. In a nutshell - tires are twisting on the ground as well as rollling when going slow.

 

As the above posts mentioned, did you try to drive straight ahead, or were you turning the steering wheel to extreme right or left? If you did the latter, then you are experiencing what some call "judder" which is when the tires are turned to the extreme and starts chunking along.

If it was in a straight line, then C6400 is probably closer to the problem. Good luck with the dealer. Tell us how it resolves.

 

No the resistance was felt after I completed my turn and was trying to proceed straight. I do experience the judder and was unsure why also but you guys answered that already.

 

The problem pretty much is gone if I turn off the car and restart. I hope I can get it fixed since I extremely satisfied with this car. I keep telling myself I'm gonna break out the daily driver and park the Vette for a week or so but seem to be driving this every day. My wife is busting my chops over that also.

 

Anyone else have any other thoughts on this? I just want to give the dealership some firepower on what to look for when I take it in on tuesday.

 

my car did something similar with a hard turn with the original fluid in the diff, i had the dealer perform the diff tsb with the newest fluid in fall and the car feels a lot better

 

I keep reading post of others where the brakes would lock up and get the SERVICE ACTIVE HANDLING message. The scary part is reading some of the members have been close to a collision due to this also. I will update this thread AFTER I get the car back from the dealership.

 

I've read through many of the posts. I have a lot of experience with automotive electronics and software. Designed right (electrical and software), this should never happen. However, knowing the real world, I can not say that it wouldn't. Especially with the use of optical encoders in the system. Not because of the encoder itself, but more because of the signals they put out. Pulsed square waves that are phased in nature. This can become a problem in a high noise environment where the noise is false but looks like a phase change and then the processing system goes bonkers. Intermittent connections on an encoder are very dangerous, and a good software engineer knows how to write code to not let this happen. The question here is did the software engineer write the code correctly?

Since personally I wouldn't put my life on the line for someone else's ability to right robust software, I would definitely take my car in if there's a TSB and get the entire harness replaced and make sure that there is proper "relief" in the harness and also that the terminals of the connector (male and female) are properly lubricated with electrical grease (the kind that doesn't attack plastic).

Please treat this seriously!!!!

 

Let us know how it works out.

 

I just called my dealer and there is no TSB on this for MY08. F.Y.I. to all.

 

Update.............................

Well thus far the dealership has not been able to replicate the issue. The dealership is taking care of other minor issues besides the brake lockup. I might have to take the vehicle back and try to replicate it myself. Upon further reading on the forums I am not alone as other have experienced something similar so it may be something other members should look out for. The dealership also refilled my rear end fluid since I felt some spuddering from the rear at hard throttle.

 

Intermittent issues are very hard to replicate. In the case of an intermittent connection on an encoder signal and the phased square-wave nature of the signal, as well as some level of software fault tolerance, it may be very very difficult to diagnose without looking at DTC's or PID's. Best thing I can recommend is first look at the DTC's and PID's, then look at the harness connector and harness and see if it is stressed in any way and also look at the connector pins that mate the steering wheel harness to the dash harness and look for witness marks of any kind on the connector contacts or connector body. No guarantees, just a few suggestions that may help.

Sorry I can't provide more information.

 

No luck in replicating the issue with the dealership. I did get the diff fluid TSB performed but on the Service Active Handling no luck yet. I will have to keep an eye on this and see if it continues and log it when it does. I might have to look into the Service Active Handling TSB and see if I can perform it myself.