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Home >> Dodge and Ram >> 2008 >> Challenger >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) - Electrical Diagnostics >> DTC Troubleshooting >> U0164-Lost Communication With HVAC Control Module >> Possible Causes

Possible Causes

Possible Causes 
TRANSMISSION CONTROL MODULE

Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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