When I hit bumps, jerk the steering quickly or hit the brakes hard ABS, Active handleing etc.. all light up and once the car is turned off it clears and everything is fine until you hit bumps again or brake hard etc...were do I start to help fine the problem or does anyone have an idea what causes this??

 

sounds like your module is loose..

 

I have the same issues.

 

Same problem. Resets when key turned off.

 

I only get the active handling on the DIC when I hit bumps and not so fast turns, is that normal? After driving a little it does go away.

 

Lets clarify a few things first.

Are you getting Service Messages or you getting messages the ABS and Active Handling is Active? Big difference. One is bad and the other is just information telling you what the car is doing.

Do these messages occur under braking or when you are just driving along with your foot on the gas?

What codes do you see when you use the DIC to display the codes? Don't use a cheap autostore scanner since it can't see the codes.

Bill

 

I get service messages

Can happen under braking or just driving along and hit a slight bump--fine some days and then other days it drives you nutts

I don't have the codes

 

It happened to me too and it got worse over time. It would happen when I hit a bump. It would even happen in a straight roll up to a stop sign. My Steering Wheel Position Sensor had gone bad. It would randomly turn off AH and TC. It would kick off the cruise control at times. The predominant code I would get was P1287. This items seems to go bad on a lot of C5's.

FYI...
Sensor $80
Dealer install ~$250

HTH Good Luck

 

You will need the codes to figure out what is happening. Turn the ignition to on and while pressing and holding the options button push the fuel button 4 times. This will put the car into diagnostic mode and the codes will be displayed on the DIC. The sytem will go through every subsystem on the car listing all of the codes for each one of them. TCS is the second subsystem shown and you should pay special attention to the codes in that section. A TCS code will look like C xxxx with and H or C or both following the number. If the service message shows up while you are driving the car you can wait until you can find a safe place to pull over and without turning the engine off start the diagnostics. Some TCS codes go current to history when the engine is cycled off and then back on.

Take a couple of minutes and get the code/codes and post them here.

Bill

 

Thanks brother

 

Heres your answer!!! Been there solved that issue!

Each wheel speed sensor connector / wheel speed sensors has a male wiring pig tail that connects to a FEMALE connector in the cars main wiring harness connector.

Inside each of those female connectors is a female pin. In that female pin is a small loop of metal that makes contact with the male pin. That small metal loop sometimes gets spread out and no longer makes good contact with the male pin. The slightest bit of vibration can cause a loss of contact and the error. Look at the DTCs and they will tell you what wheel is having issues. Carefully examine each female pin and look for spread pins. There are jumper harnesses on the front wheel sensors and their bad for this issue.

You can use a small metal pick and re-bend the little metal loops to make better contact and solve the issue. I have done this in the past and I have also replaced the entire connector.

Bill C

 

Awesome, I am bookmarking this page so if this happens to me I will have much less stress. Thanks for the info!!

 

Heres some cool stuff to save:

Here are pictures of a brand new wheel speed sensor plug and a BAD one. The bad one is on the RIGHT and the new unmolested new one is on the LEFT



Heres a picture of the front jumper harness:



Pictures of the replacement plug/pigtail:



Wheel bearing / speed sensor assembly with pigtail:



If you ever think that you have a problem with a female connector pin, the only way to really confirm that it is good or bad is to use a spare MALE pin to test the female pins grip. Here is a male pin that I removed from an old emergency flasher switch:



Hope this clears up the mystery of this issue.

Here are some other facts:

- Ive owned and repaired C5's from 97 to present and have NEVER seen a wheel speed sensor go bad. (Other than physical damage from an accident) There practically bullet proof. There really simple and theres nothing to go bad:

 

I thank you and I think you are right I just checked the codes and C1227 HC came up which is Wheel speed sensor circuit---this has got to be the best site on the web---I have other cars that I have tried to get info about and their just not supported like the vette!!!!!

 

Word. This thread from start to finish describes my problem and thus the solution exactly as I'm suffering from it. Wow.

THANKS BILL!!!

-Steve