P1A6C GMC - SGCM Service Calibration Fault

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Starter Generator Control Module (SGCM) Program
  • Faulty Starter Generator Control Module (SGCM)
  • Starter Generator Control Module (SGCM) harness is open or shorted
  • Starter Generator Control Module (SGCM) circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1a6c Gmc Description

The internal fault detection is handled inside the control module. No external circuits are involved. This code indicates that the Energy Storage Control Module (ESCM), Starter Generator Control Module (SGCM) or Heating Control Module (HCM) has not yet been programmed with latest production software.
OBDII Code P1a6c Gmc - SGCM Service Calibration Fault - AutoCodes.com

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P1A6C GMC Comments

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