1994 GMC Truck transfer case

Drive Train Axles Bearings problem
1994 GMC Truck V8 Four Wheel Drive Automatic

I recently had my transmission rebuilt and now the 4x4 will not engage. I replaced the actuator as that was the problem before but no luck. I checked the fuse and found it was gone( 25 amp). I replaced it and the new one went right away. The 4x4 was working fine before the rebuild. Any ideas? 1994 gmc k2500 4x4 5.7 260xxx kms