I now have a whining noise

[cumminstrokethi]

It just started here lately. I don't have ANY clue what it is. It sounds kinda like its coming from the rear end. It only does it when going up a hill, or under heavy acceleration. If you hit the brakes when it's whining, it goes away until the next hill, or heavy acceleration. Any idea what it is?

 

[whitetrash21]

check all fluids. simple elimination there. you sure its the rear end?? maybe a transfer case?? this is on the dodge, right??

 

[bigBOOST]

Check the fluid level in the rear diff. also check the wear-&-tear on the ring and pinion gears

 

[cumminstrokethi]

check all fluids. simple elimination there. you sure its the rear end?? maybe a transfer case?? this is on the dodge, right??

It's on the duramax

 

[whitetrash21]

not sure if the pump rub issue will make this noise, but you might try checkin for that too. also the diff fluid level ,like bb said

 

[RYDNHI4X4]

Check this out.
http://www.dieselhaulin.com/forums/duramax-lly-04-5-05/1044-whinning-noise.html