02 Envoy/Trailblazer Encoder Circuit C0327 & Replace NVG226 Transfer Case-EP208

Hey gang, our 02 Envoy was somehow slipping out of four wheel drive even though the switch indicated that it was in 4wd. We first attempted to fix by replacing encoder motor because there was a trouble code related to it but then found the shifting mechanism inside transfer case was broken. We found a used t-case and installed,as well as replaced encoder motor and changed the fluid.