I got this whining sound coming from my truck upon deceleration, most noticable from 25 MPH and down. It happens with the clutch in/out in gear/out of gear doesnt matter. It slows as the truck slows so im thinking it has to be something in the t-case. I pulled the t-case out to reseal it and noticed while it was apart that the ring the planetary spins around on is discolored from heat. Doesn't the planetary only spin when in low range though? Anybody have any ideas or have had the same experience? My truck is an 02 so the front driveshaft spins all the time.
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