Engine-Codes - Gmc - P0AC4 GMC

P0AC4 GMC Code - Hybrid Powertrain Control Module Requested MIL Illumination

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0AC4 GMC code possible causes

  • Faulty Hybrid Powertrain Control Module
  • Hybrid Powertrain Control Module harness is open or shorted
  • Hybrid Powertrain Control Module circuit poor electrical connection

|How is the P0AC4 GMC code repair?

Start by checking 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.

|P0AC4 GMC code tech notes

The P0AC4 code is an information code only, if there are no other engine codes, then the Hybrid Powertrain Control Module needs to be diagnose.

|What is the cost to diagnose the P0AC4 GMC code

Labor: 1.0

The cost to diagnose the P0AC4 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0AC4 GMC code possible symptoms?

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

|What is P0AC4 GMC code meaning?

The P0AC4 code indicates the Hybrid Powertrain Control Module has set an emission related hybrid powetrain code.The Hybrid Powertrain Control Module sends a message via serial data circuit to the Engine Control Module (ECM) requesting illumination of the Malfunction Indicator Light (MIL). When the ECM receives the message, the code P0AC4 code will set. The P0AC4 code information for the ECM will only display the P0AC4 code,but freeze frame/failure records data may display the hybrid powertrain code that sets.

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