Buzzing Sound When Truck Off

[Lando]

My truck did something strange today that I haven’t seen/heard before.

I’d been home 5 hours and went into the garage to hear a strange buzzing sound. It definitely sounded like it was coming from the truck, not the engine but near the back of the truck underneath.
Randomly it stopped for a few seconds, and started again for a minute and then stopped.

Edit: I figured it out as normal. please delete thread if possible.

Sponsored

 

[GMak621]

My truck did something strange today that I haven’t seen/heard before.

I’d been home 5 hours and went into the garage to hear a strange buzzing sound. It definitely sounded like it was coming from the truck, not the engine but near the back of the truck underneath.
Randomly it stopped for a few seconds, and started again for a minute and then stopped.

Edit: I figured it out as normal. please delete thread if possible.

This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction. Normal

 

[Tom Sellick]

Ah ok. Happened to me too once. Had no idea what it was.

 

[Airborne]

This happens on my 2014 4 runner, same scenario. Im in garage heard the noise….i unscrewed my fuel cap. And it was gone

Sponsored