1993 Chev ext cab 4x4. 160k odo.

I was cruising down the road about 30 mph (steady roll) when all of a sudden the front end started to whine. It progressed with speed and slowing down. Just like the cards we would clip to our bicycles when we were kids. I have a feeling it could be something serious but, not sure what as of yet.

CV? U-joint? Internal gears?

Since we just had a pretty good snow storm, I figured it was a chunk of ice or a stick getting lodged somewhere. I found nothing!

Has anyone experienced something like this? Thanks in advance!

 

I sure have. It was on a difference vehicle though.

Does the whining go away when you're stopped? Does it get louder when the truck is in park and you rev the engine?

 

Yes, and the engine sounds normal when in park. I haven't had the time to dig around closely yet.

 

So the noise is still there when you rev it in park or not?

 

power steering pump? maybe a bad hub bearings could be bad cv-joints

 

The noise is not there when in park and I rev the engine.

 

Update.
I finally had the time to check this out a bit. Started it up this morning and heard not whining. Put it in reverse and backed up about 20 ft. Fwd the same. Shifted to 4 high did the same. 4 low the same then back to 2high. Drove it for 1/2 a mile with no whine present at all. I did find that one of the CV shafts had more end play than the other. Not sure if that a problem. Is there anyway to test the accuator? I think for now I will change the fluid and hope for the best.
Anymore input from y'all would be great. Thx