Jeep Cherokee Differential Pinion Gear

I Hear A Huming Noise On The Rear End Of The Car And I Was Wondering If This Could Be The Bearings On The End Of The Diferential Or If It...

I Have A 95 Cherokee, 136k, W/ The Straight Six 4.0 And Manual Tranny.4wd. Pinion Seal Went Out In The Rear Differential. The Gear...

85 Jeep Cj7....drives Great In 2wd But When U Put It In 4wd The Front Wheels Spin The Opposit Of The Front...is There A Reverse Pinion In...