Don't believe the PCM would monitor that function. I could see a monitor of the Tcase, that if the vehicle rpms were not in range for what is selected on the Tcase, it might be smart enough to throw a code.
However, with just a locker being locked, not sure how the PCM could monitor that, except through the TCCM, and there are only two wires to the locker solenoid.
If you sent me an email, please resend, I have not received one from you or Yellow H3.
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Black Sheep Hummer Squadron
(ME TOO)
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