Commander 4WD V8-4.7L VIN N (2006)
The hard wired inputs to the module may be diagnosed and tested using conventional diagnostic tools and procedures. However, conventional diagnostic
methods will not prove conclusive in the diagnosis of the module electronics, the SKREEM or the serial data bus electronic message communication
between these modules. The most reliable, efficient, and accurate means to diagnose the shaft lock module, the SKREEM and the electronic message
communication between these modules requires the use of a diagnostic scan tool.