95 b2300 strange rear end noise?

[Rose2300]

I've had my 95 b2300 for a little less than a year now and I am noticing that if I give it a little gas at lower rpms I can hear a weird chirping noise coming from somewhere in the rear end. Does anyone have an Idea what it could be?

 

[Rogue_Wulff]

Does it only do this at slow speed? Any speed?
Does the sound change if you lightly apply the brakes?

There's a few different things that can make a chirping noise, like u-joint, axle bearings, brake shoes, just to name a few. More details will help narrow it down.

 

[Rose2300]

slight chirp happens usually right after I up shift into lower rpms, then it goes away after like a second. thats the only time it happens, and if I wait a little longer to upshift into a higher rpm, it doesn't happen. doesn't happen when im braking.