i habe a 2000 blazer .my transfer case is making a small grinding nose when idling and driving. not in 4x4 as i know of. fluids topped up with specific oil. just wondering if any one has has similar issue and or repaired it.
233c the t case says gu60 gear ratio

 

if its doing it when youre not moving it might be the transmission. nothing in the transfer case is moving when sitting still

 

hey yah i put it in 4x4 hi n lo n back to 2wd and so far the sound hasnt come back. im replacing all the 4x4 acuators on it. cable,3button switch,transfercase bolt thing,and acuator.was havn trouble with 4x4 in the winter so im replacing it.