Front/Rear Differential May Develop Noise Due to Worn Bearings on GMC 1500 Pickup

The front or rear differential may develop an abnormal noise due to worn bearings or another internal fault. Our technicians tell us that a complete overhaul of the affected differential is commonly necessary to correct this condition.

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Average mileage: 182,000 (179,000–185,000)
Drive Train affected: 4WD
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
12 people reported this problem
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problem details
1997 GMC 1500 Pickup - 4WD 179,000 mi,
sounds like bearings in rear