02 4Runner squeaking noise when reversing

Hi- I have a 2002 4Runner that recently started making a loud squeaking noise, but ONLY when i reverse. Anyone have any idea what the problem might be?

Thanks!

What part of the truck (front rear side engine transmission rear end etc) does it sound like it's coming from?

this just started happening to me as well. it sounds like it is coming from the rear passenger side

ive got a 99 4runner, 3.4l v6

this just started happening to me as well. it sounds like it is coming from the rear passenger side

ive got a 99 4runner, 3.4l v6

The only thing I can think of is to check the brakes and make sure they are adjusted correctly and that they have at least 3 mm lining.