It's quite entertaining really. When I drive Along I can hear a high pitch noise, that sounds like a bearing going out. The only question is, which bearing. I roll down my windows and I cant tell where the noise is coming from. The faster I go, the higher the pitch. I dont know how long it has been going on for, as the radio/AC drown it out, but I would like to address it in case it can become more serious.

I was thinking wheel bearings maybe? idk

While Driving along I threw it into neutral and coasted and the noise remained, so I dont think it is anything within the Transmission. Also, the noise is not present while at a stop.

I have an 01 1500, 318 4x2. Any Idears?

__________________
2001 Ram 1500, 318, Automatic, 4x2, 5000k HID Headlights, 4300k Hella 500's, 5000k HID Hella 550's.

Wouldnt let me edit for some reason... Truck has 94k miles on it.

__________________
2001 Ram 1500, 318, Automatic, 4x2, 5000k HID Headlights, 4300k Hella 500's, 5000k HID Hella 550's.

Check your brake pads!

__________________
98 RAM 1500 4X4 5.2
Hypertech
Fastman TB
Magnaflow Cat.
Flowmaster American Thunder w/super40
14x3 AC mod

Brand new pads and rebuilt calipers as of yesterday.

__________________
2001 Ram 1500, 318, Automatic, 4x2, 5000k HID Headlights, 4300k Hella 500's, 5000k HID Hella 550's.

I have had pretty good luck with riding in the back of the truck while someone else drives, that way I can try to listen at all four corners and hear the rear end. Just my $.02.

wheel bearings or differential bearings. mine ended up going out the same time. sounded kinda like an air squeeling noise. like someone breathing in a bottle at really high speed.

__________________
98 Ram 1500 5.2L 2x4, Superchips, K&N CAI, Flowmaster Super 44, 2 10" Bazooka Subs, Westin Brush Guard, 2 KC Highlighters, Rhino Lining, Fastman 50mm, Powerdyne Supercharger w/9 lb boost