highperf4x4
Original Male
My truck is a 1990 GMC k1500 with the floor shift 208c transfer case. Everything worked fine before I started my most recent upgrades. I pulled the front differential to install a 6" lift kit. While I had it out I took it to the shop and had new gears, bearings, seals installed. I also pulled the transfer case with the factory 5 speed to install a th400. After putting everything back I'm having trouble getting the front differential to engage. I've checked all the harness connectors and I've replaced the actuator. When I shift the transfer case into 4h or 4l it takes forever to engage if it engages at all. Most of the time it doesn't. When it does engage, it won't stay. Once the truck starts moving it disengages. Any suggestions about what I can check and how to test the components involved in 5th member actuation?