2SlowinTO

A few time now on the highway, when hitting a bump in the road the traction control kicks in, and shuts down my throttle, and stays that way until I shut off the traction control button.

Then works fine again.

And prior there was no wheel spin (I'm not accelarating)

Any idea's??

Thanks in advance.

AllVette

What codes?

Bluefire

I assume you are running stock tires sizes. Pull your codes to see what is there. It sounds like an intermittent wheel speed sensor signal. The pins can wear out (from vibration) and loose contact. Check these connectors. HTH.

Bill Curlee

Check for DTCs and also,,,when it happens, look at the DIC MESSAGE CENTER and see if there are any active handling messages, traction control or antilock messages saying that they are active.

If the EBTCM is having issues, it will display error DTC that will tell us what wheel/s are causing the issue.

I agree that there are most likely issues with the wheel speed sensor female connector female pins. The female pins have a toung in them that grip the male pin. If that toung get damaged or spreads out, it will cause a poor connection and the sensor for that wheel will error out. You need to find a male pin of the correct size and test all the female pins in the wheel speed sensor wiring harnesses and the two front jumper harnesses.

Dont let anyone convince you that a wheel speed sensor is bad. I have NEVER seen one go bad unless the pig tail was ripped out due to an accident or neglect.

BILL

2SlowinTO

TO check and clean the connections. Where is the connector? any trick to getting it apart to clean it?

Thanks everyone.

P.S. Will check codes and post as well

Bill Curlee

Look at each wheel hub and you will see a short pig tail harness coming off the back of it:

Front sensor/hub





Rear sensor hub





The wheel hub side of the connector is a MALE plug with male pins so,,,it isnt the problem unless the pins are corroded.





The Female side of the wiring harness that the sensor plugs into is the issue. The female pins look like this:



The connector on the LEFT is NEW. The one on the RIGHT is BAD. See how the pins are misshappen!!

You can use a metal pick and try to bend the toung back down. I ve done that successful on a few cars. If it fails, you will need to splice on a new plug or install new pins on that plug. Either way works.



Heres what I use to test all my female pins that take that size pin. DO NOT force in a larger male pin!!



The front wheel hubs/sensors use a JUMPER HARNESS and that has female pins that tend to go bad. The dealer will change that and the hub in a heart beat to the tune of $600-$800 bucks.



Just for your knowledge,,,,,heres whats inside a wheel speed sensor:

c5vetteski

i was having the same problem. i took it to the dealer and belive it or not it was cause the tires needed to be replaced. i thought they were still good. but when i changed them the problem went away. maybe the same problem, just trying to help.. c5 vette

2SlowinTO

Thanks for the detailed pic's and description, greatly appreciated!

Will post how it pans out.

Thanks again!

BUGZ

markcruz

Nice pics Bill!

BigSexy181971

Great right up along with pics for us who love to see pics.

Thank you - Rob

Mike Mercury

has your C5 been modded with braided steel brake lines?

AU N EGL

those pig tail lines do rot though, especially in wet and salting northern areas.

2SlowinTO

Took them apart a few days ago, cleaned them up (looked like new inside)

Cleared all the codes.

So far so good!!

Thanks for all the help, and especially those pictures.

2SlowinTO

Well that fixed lasted till now, that's a good free fix Thanks again!

Will check them again this weekend, and see if I can get another 2 years free repair

P.S. I think that is what is kicking out my cruise control this time. I'll check the codes, and post as well.

Bill Curlee

Yes, almost ANY EBTCM DTC will cause the Cruise Control to cancel out. When it cancels out IMMEDIATELY,, pull up the DTCs and see what codes are present.

From that point, I can tell you what to look at.

BC