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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 2 - See Note 5
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