My 2001 has the 4x4 manual shifter, with the hubs locked in and the shifter in 4X4 low and high, the 4x4 is not working. What is the best way to troubleshoot this? Put it on jackstands?? What is a common problem with this?
Check to make sure the linkage is connected to the transfer case, and there linkage moves the actuation shaft.
Raise the front wheel off the ground. Lock hubs. Spin tires. Do they when selector is in 4hi or 4low? If they spin, does driveshaft spin? Do stub axles spin?
Try to isolate everything outside of the t-case before jumping inside
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