2015 silverado 131,000 miles

[bengrate]

At 31-44 mph I hear a faint motor start up for 5-7 seconds and then go off and then repeat again. Checked wheel bearings and jerking steering wheel. A recall at 58k on the power steering was updated. Is this a ghost or is it supposed to do this? Vin 3gcuksec8fg384995 LTZ 4x4 duel cab

[carriedi]

you might have to have someone drive your vehicle so you can listen for the noise to see if you can narrow down where the noise is coming from.

A worn door actuator for the climate control might be moving and adjusting itself.

ABS could be turning on the abs motor to keep the abs pumped up.

It's not the ac compressor turning on is it? Turn the ac off and turn the defroster to the vent position and see if the noise is gone.

Without hearing the noise myself it is really hard to tell you what could be making the noise. You may have to take a mechanic from a shop for a ride and have them listen for the noise and see if they can narrow down where the noise is coming from