Ok so i have a 01 2500hd 4x4 manual shift tcase.
So the problem is it wont shift into 4 hi or low. I can set the shifter to either, the 4wd light comes on and the front diff engages but the tcase doesnt seem to be driving the front tires. Ive already changed the sensor/actuator on top of the case that makes the 4wd light come on and that didnt do anything. I have checked the front diff actuator and you can feel it engage. Ive also had the truck running and shifted into 4x4 and tried spinning the front driveshaft and it doesnt spin when its shifted to 4x4. However with the truck off and shifted into 4x4 the front driveshaft spins freely. Would this be a shift fork issue or something else?