Hi I took a look thru the 4x4 troubleshooting thread, seems for people with similar symptoms the issue was the TCCM. My truck is a 2006.
I made a video see below.
www.youtube.com/watch?v=Y-Wl_7f8d2s
Basically it doesn't seem like the truck even tries to switch out of auto mode, unless I move the knob with the ignition off, then it will blink. I don't think I hear either the encoder motor or the front actuator.
I tried exercising the switch a whole bunch. No change.
If the problem was the actuator or encoder motor, the light should blink on a new setting right? It also takes some time for the service 4x4 light to come on when the ignition is turned on.
I made a video see below.
www.youtube.com/watch?v=Y-Wl_7f8d2s
Basically it doesn't seem like the truck even tries to switch out of auto mode, unless I move the knob with the ignition off, then it will blink. I don't think I hear either the encoder motor or the front actuator.
I tried exercising the switch a whole bunch. No change.
If the problem was the actuator or encoder motor, the light should blink on a new setting right? It also takes some time for the service 4x4 light to come on when the ignition is turned on.