2003 cobalt traction control light on - 2003 Chevrolet Cobalt

Check these sites to relearn traction control.

https://www.google.com/search?q=+2008+Chevy+cobalt+sport+changed+hubs+relearn+traction+control


Best to you.

Traction Control System Indicator
TRAC OFF The instrument panel cluster (IPC) illuminates the TRAC OFF indicator when the following occurs:
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The electronic brake control module (EBCM) inhibits the traction control system due to a malfunction in the traction control system. The IPC receives a serial data message from the EBCM requesting illumination.

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The body control module (BCM) detects that the traction control switch has been pressed (signal circuit is low). The BCM sends a serial data message to the EBCM in order to disable traction control. The IPC receives a serial data message from the BCM requesting illumination. The BCM sends a serial data message to the radio in order to activate an audible warning.
you need to have the ( EBCM ) electronic brake control module checked fro codes !

Take it to a shop. Don't fool with it. It has to do with the traction control.

traction control will not cause starting issues read check engine light or security

tc stands for traction control and usually means that something in the system is not in order, say like a wheel speed sensor. However, if the abs light goes on at the same time, it's usually a wheel speed sensor somewhere.

This could be a module or a wire to the wheel speed sensor on the tc side.

Get an ABS Brakescan Tool, like an Actron OBD-II ABS Brakescan tool to help to diagnose what is wrong.

They cost like $100 plus shipping on Amazon.com.

a problem with one of the wheel speed sensors

sounds like you have a loose sensor on the traction control system i would check all the sensors see if they are properly connected

traction control should stay on and it should be a button on the dash somewhere (not sure where, my cobalt doesnt have one) but if it got shut off at some point its probibly just telling you its off becuase other than racing theres no reason to shut Traction Control off.

sounds like speed sensor on transmission