What does TC light mean on Chevy Traverse?

The TC light on a Chevy Traverse signals the status of the Traction Control system (part of GM’s StabiliTrak stability control). A blinking light usually means the system is actively managing wheel slip, while a steady light can indicate the system is off or there’s a fault needing attention.

Understanding Traction Control in the Traverse

Traction Control (TC) helps prevent wheel spin by applying brakes or reducing engine power to individual wheels when loss of grip is detected. In the Traverse, TC works in concert with StabiliTrak to keep the vehicle stable during acceleration, turning, and on slippery surfaces.

Interpreting the TC light: blinking vs solid

TC light blinking during acceleration

A blinking TC light typically means the system is actively intervening to maintain traction—braking a slipping wheel or trimming power. This is normal in slick conditions or when sudden acceleration would cause wheel spin.

TC light solid (not flashing)

A steady TC light can indicate the traction control system is turned off (manually via the TC OFF button) or that there is a fault in the system. If you didn’t disable TC and the light remains solid, schedule a diagnostic check to verify the cause.

TC OFF indicator or related caution indicators

Some trims display a separate “TC OFF” indicator when the driver has disabled traction control. If you see that, re-enable TC if conditions permit. If the light is on without you pressing the switch, or accompanied by other warning lights, have the system inspected.

How to diagnose and respond

Use these steps to determine whether you’re experiencing normal operation or a potential fault with the TC system.

• Check whether the TC OFF switch has been pressed; if so, press it again to re-enable traction control.


• Look for other warning indicators, such as ABS or ESC/StabiliTrak lights, which can signal a broader system issue.


• If the light is blinking while you accelerate on slippery roads, continue driving with extra caution—the system is doing its job.


• If the light stays on without obvious cause, safely pull over, restart the vehicle, and if it remains illuminated, seek a diagnostic scan (OBD-II) to identify faulty wheel speed sensors, wiring, or control modules.

Note: A persistent or unexplained TC warning can affect handling and braking stability, so don’t ignore it.

When to seek professional service

If the TC light remains on after re-enabling, or if it stays on along with the ABS or ESC indicators, arrange a service appointment. A technician can read fault codes, inspect wheel speed sensors, brake components, and the StabiliTrak system to determine the exact cause and necessary repairs.

Summary

In short, the TC light on a Chevy Traverse flags Traction Control activity. Blinking signals active intervention to prevent wheel spin, while a steady light may indicate the system is off or a fault. Treat a persistent or unexplained warning as a cue to have the vehicle inspected by a qualified mechanic to ensure safe handling on all road conditions.

How do you fix a TC light?

A system error or glitch can easily throw off your TCS system settings and cause the light on your dashboard to pop on. To reset your vehicle's computer, turn your vehicle off and find the fuse box. Remove the fuses labeled “back up” and “ECU.” Leave the fuses out for 10 minutes before reinstalling them.

What does the TC light mean on a Chevy Traverse?

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Why is my TC light on my dashboard?

The "TC" light on your dashboard means your traction control system is either off, or there is a problem with it. First, check if the system was accidentally turned off by a button on your dashboard or console and press it to turn it back on. If the light stays on after turning the system back on, it indicates a malfunction, possibly due to a faulty wheel speed sensor, steering angle sensor, or an issue with the anti-lock brake (ABS) system, and you should have a professional diagnose the problem.
 
This video explains what a traction control light is and why it might be on: 44sStudent LessonYouTube · May 13, 2024
First, check if you manually disabled the system 

• Look for a button: Find a button on your dashboard or center console that says "TRAC OFF," "TCS OFF," or shows an icon of a swerving car. 
• Press the button: If you see this button, press it once to see if the light turns off and the system re-enables. 
• Why it's sometimes disabled: You may have accidentally pressed it, or it might have been turned off for performance driving or to get unstuck in snow or mud. 

If the light remains on, there is likely a system malfunction 

• Wheel speed sensor fault: This is a very common cause. A faulty or dirty sensor, or one with a loose connection, can trigger the light. You may also see the ABS light come on at the same time. 
• Steering angle sensor issue: The system uses this sensor to know your turning direction. If it's inaccurate, the system may shut down for safety. 
• ABS system problem: Since traction control is linked to the ABS, a malfunction in the ABS module or pump can cause the traction control light to come on. 
• Other electrical problems: Issues with the wiring, control modules, or even low voltage from a weak battery or alternator can trigger the light. 

What to do next

• Drive with caution: If the light is on due to a malfunction, you are driving without the stability assistance of the traction control system, especially in slippery conditions. 
• Get a diagnosis: Have a mechanic or dealership use a diagnostic scan tool to read the trouble codes. This will pinpoint the exact issue, such as a bad sensor or other component. 
• Consider safety: If the ABS and brake lights are also on, it may indicate a more serious braking system issue, and you should have the vehicle towed to a repair shop. 

Can you still drive with the TC light on?

It is safe to drive with the traction control light on in dry conditions, but you should get it checked by a mechanic soon because the system may not be working correctly. If the light stays on during slippery conditions like rain, snow, or ice, it is unsafe to drive because the system is likely disabled and you will have reduced traction and stability. 
When you can likely drive

• Dry roads: If the light came on for a moment and then turned off, or if the roads are dry and the car is driving normally, it's generally safe to continue driving. The light may have been triggered by a minor, temporary glitch. 
• Get it checked: Even if you can drive, you should still take the car to a mechanic for a diagnosis as soon as you can, as a persistent light indicates a system failure. 

When you should not drive

• Slippery conditions: Driving with the light on in snow, rain, or ice is unsafe because the traction control system is likely not functioning, and you will have reduced stability and be more susceptible to skidding. 
• Other warning lights: If other lights, such as the ABS light, are also on, it's even more critical to avoid driving, as these systems are interconnected and a failure could impact braking efficiency. 

Why it's important to get it fixed

• Safety: Traction control is a vital safety feature that prevents skidding, especially in poor weather. 
• Potential for more serious issues: A persistent light can indicate a problem with sensors or wiring, and ignoring it could lead to more costly repairs. 
• Possible system failure: A continuous light means the system is deactivated, and your car's ability to maintain traction when you need it most will be gone.