I have a 2002 Oldsmobile bravada I need a new differential assembly I'm looking to see what other vehicles are interchangeable any help?

 

The differential should be the same in Chevy Blazers and GMC Jimmy's. Except for ZR2 which has a longer wheel base. The important item is to match the gear ratio to your existing gear ratio. The gear ration is listed in the RPO codes. (Should be in the glove box) GU1 Axle Rear 2.41 GU2 Axle Rear 2.73 GU3 Axle Rear 2.93 GU4 Axle Rear 3.08 GU5 Axle Rear 3.23 GU6 Axle Rear 3.42 GU7 Axle Rear 2.77 GU8 Axle Rear 3.90 GU9 Axle Rear 3.91. Also look to see if you have G80 Locking Rear Diff.