Grumbling/scraping feeling on brake pedal

[titeo1106]

I have 2006 Pontiac Torrent AWD with front disc and rear drum brakes.

I need help with my ABS & traction control lights come on together (sometime) when I hit brakes slowly to slow down my car around 20-30km/h with a grumbling/scraping feeling sent to my feet from brake pedal (feel like rumble strip on highway).

ABS & T/C lights go away if I shut off engine and restart car.

It also happens if I accelerate at that speed.

This issue does not happen when I hit brake hard.

Has anyone experienced similar issue?

 

[melsg5]

the lights usually come on for a failed wheel sensor but other causes such as broken wires can cause the lights to come on also. You will have to perform a visual inspection of the wires and either scan the system for a bad sensor or use an ohmmeter. The scraping sound will require an inspection of the brake pads and shoes.