ABS Light Stays On in Your Chevrolet Traverse? Here’s What to Check First

When the ABS warning light on your Chevrolet Traverse II stays on without flashing, it’s your truck’s way of telling you the anti-lock braking system has detected a fault. In my shop, the first thing I suspect is a wheel speed sensor — these little magnetic pickups live at each wheel hub and constantly send rotation data to the ABS module. Dirt, corrosion, damaged wiring, or a failing bearing can all make the signal drop out, which turns the light on.

What to Check First

Start by scanning the ABS codes with a good OBD-II scanner that reads manufacturer-specific codes. You’ll often see something like C0035 (left front wheel speed sensor) or C0040 (right front), etc. If a code points to a specific corner, inspect that sensor and its connector first. Look for a broken or frayed wire near the strut or hub, and check the connector for corrosion or pushed-out pins.

• Wheel speed sensor itself – often gets covered in metallic brake dust, which blocks the magnetic signal.
• Sensor wiring harness – chafing against suspension parts is a common cause on the Traverse.
• Wheel bearing / tone ring – a worn bearing introduces play, and a damaged or rusted tone ring creates an erratic signal.

Is It Safe to Keep Driving?

You can still drive with the ABS light on — your normal brakes will work fine, because the ABS system is isolated and simply switches to manual braking. That said, if you also see the traction control light or the red brake warning light, you should pull over and have it towed. And remember: if you need to do an emergency stop on slippery pavement, the wheels will lock up without ABS, so leave extra space and avoid hard braking until you get the sensor replaced.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.