Diagnostic Test

CHECK FOR TRANSMISSION CONTROL MODULE (TCM) DTCS 

This Diagnostic Trouble Code (DTC) will set if a DTC is detected in the TCM. 

• Repair the TCM DTCs. Refer to 3.0L DIESEL - DIAGNOSTIC CODE INDEX , or 3.6L (GPEC 2A) - DIAGNOSTIC CODE INDEX .
• Perform the DRIVER ASSISTANCE SYSTEM MODULE (DASM) VERIFICATION TEST. Refer to DRIVER ASSISTANCE SYSTEM MODULE (DASM) VERIFICATION TEST .