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P0A1A - Generator Control Module

P0A1A - GENERATOR CONTROL MODULE

Description:  This DTC indicates a generator control module (GCM) internal concern.
Possible Causes: 
  • GCM processor concern
  • GCM A/D converter concern
  • GCM supply voltage out of range
  • TCM-GCM serial link concern
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All See Note 1 U0418 - INVALID DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE  - See Note 3 U0418 - INVALID DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE