Four problems related to differential unit have been reported for the 1999 Chevrolet Blazer. The most recently reported issues are listed below.
4th time since I bought the vehicle in oct. 99 I have had a problem with the differential unit had 19,000 miles when I bought it now has 84,000.
No summary listed for above vehicle.
Rear end made whining noises,took to dealer,dealer said rear end scored,dealer replaced ring gear and pinion,and recon. Diff. Case.
While driving at 45 mph pins in casing near differential fell off into the spider gear in the rear end, causing the rear end to lock up and vehicle skidded down the road.