FAQ for Transfer Case Shift Control Module Repair
Q: What is the cause of the fault?
A:
The cause is that the Transfer Case Control Module (TCCM) has not received the wake-up call during key-up and has remained in °sleep mode°.
By BobGM Specialist
02/11/2022 Q: What should be noticed if performing this procedure for module replacement?
A:
You should install a new module before proceeding.
By BobGM Specialist
02/11/2022 Q: What should be done before reprogramming?
A:
You should close the doors and wait two minutes to allow other modules to stop communicating via the class 2 data line.
By BobGM Specialist
02/11/2022 Q: What is the removal procedure for the transfer case shift control module?
A:
The procedure is to disconnect the shift control module electrical connectors, and then unsnap and remove the shift control module from the bracket.
By BobGM Specialist
01/11/2022 Q: What is the proper way to install the transfer case shift control module?
A:
The proper way is to program the new module, install the shift control module to the bracket, connect the shift control module electrical connectors, and then start the engine and test the automatic transfer case system for proper shift operation.
By BobGM Specialist
01/11/2022 Q: What should be done after repairs are complete?
A:
You should clear DTCs from the module before a system function test. If codes are not cleared first, the system will not function after repair. The technician may erroneously think that the system is still down and that further repairs are needed.
By BobGM Specialist
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