P1AC9 GMC - HCM Service Calibration Fault

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

P1AC9 GMC Possible Causes

  • Faulty Hybrid Control Module (HCM)
  • Hybrid Control Module (HCM) harness is open or shorted
  • Hybrid Control Module (HCM) circuit poor electrical connection

How do I fix code P1AC9 GMC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the P1AC9 GMC code

Labor: 1.0

The cost of diagnosing the P1AC9 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1AC9 GMC Description

Hybrid Control Module (HCM) The internal fault detection is handled inside the control module. No external circuits are involved.
OBDII Code P1ac9 Gmc - HCM Service Calibration Fault - AutoCodes.com

More Information

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