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P0561 GMC Code - System Voltage Performance

- Code Popularity: 838 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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Code P0561 GMC Possible Causes

  • Battery defective
  • Loose or missing alternator drive belt
  • Faulty alternator
  • Open or short system voltage circuit

How do I Fix the Code P0561 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.

Does your GMC have Safety Recalls? → Check here

What is the Cost to Diagnose the Code P0561 GMC?

Labor: 1.0

The cost of diagnosing the P0561 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.

What are Code P0561 GMC Possible Symptoms?

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

Code P0561 GMC Description

The Powertrain Control Module (PCM) continuously monitors the system voltage. The system voltage information is taken from the PCM's ignition feed circuits. Voltages below 8.0 volts or above 17.1 volts cause improper system operation and/or component damage. If the system voltage is low the PCM raises the idle speed in order to increase the generator output. The PCM disables most outputs to protect the hardware if the system voltage is high. A scan tool may not display data if system voltage is outside this range. The Diagnostic Trouble Code (DTC) will be set when the System Voltage detects a system voltage below or above a threshold.

OBDII Code P0561 GMC - System Voltage Performance -
P0561 GMC Code - System Voltage Performance

Need More Information on the P0561 GMC Code?

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Code P0561 GMC comments

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