Originally Posted by KazK

Probably cause there is a hot motor under there?

Originally Posted by broncoski

I had the same noise in my 04 early last fall. When the truck was cold. The cold temps in the morning mixed with not enough vacuum to hold the 4 wheel drive from engaging was the culprit. I let it go to long, and it ruined my hubs. Only did it with a little throttle, trying to lug a taller gear.

Originally Posted by Quiz

2010 SuperCrew Lariat 4WD...

At cruising speed, say 55mph...not on the throttle much, not slowing down, just cruising along and holding speed...

All of a sudden I get this noise coming from the front end that sounds like...well...best way I know to describe it is to imagine running over a section of chain link fence and dragging it along the pavement for 30-40 yards under the front axle. Then, after a few seconds, it stops. I don't notice any kind of rough ride, no stalling engine, no loss of performance....just sounds like there is a chain link fence hung under the front of the truck.

It happened once two weeks ago and I scratched my head, thought maybe I ran over something. Inspected as thoroughly as I could under the truck - All looks perfect. I chalked it up to "weird" and went on about my life. A couple of weeks go by, and boom, it does it again....this time on a different section of road. About 30 minutes later, it does it a third time. That was Friday. This is Sunday, and it hasn't done it sense.

I am thoroughly perplexed.

Any ideas?

I guess I will have to take it to the dealership, but I'm sure the won't be able to replicate it and it will be a wasted effort.