Got a service light on the dash and it's throwing out C0379 code. The spline disconnect was changed in June. I just changed the selector switch, (easy fix first). When I switch from 2wd to 4wd, I can hear the actuator engaging the spline disconnect, and can go through to 4wd Low, but the indicator on the switch stays flashing, and in 4 Lo, 2wd lights up steady also, (which is why I went with switch). Have pulled the #8 fuse to flash the TCCM, but here I am. Trouble shooting ideas? Oh ya, 109k miles.