AutoCodes – GMC – P0560 2014 GMC Sierra

P0560 2014 GMC Sierra Code - System Voltage Malfunction

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the system voltage. Common causes include Battery defective, Loose or missing alternator drive belt, Faulty alternator. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0560 2014 GMC Sierra indicates System Voltage Malfunction.
Common causes: Common causes include Battery defective, Loose or missing alternator drive belt, Faulty alternator.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 210

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 04, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0560 2014 GMC Sierra 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.

OBDII Code P0560 2014 GMC Sierra - System Voltage Malfunction - AutoCodes.com — P0560 2014 GMC Sierra Code - System Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC P0560 2014 GMC Sierra?

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

How to Fix the DTC P0560 2014 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0560 2014 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0560 2014 GMC Sierra code?

Need more information on how to fix the P0560 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0560 2014 GMC Sierra Code

What does the OBDII code P0560 mean on a 2014 GMC Sierra?

1. P0560 indicates a "System Voltage Malfunction," meaning the powertrain control module (PCM) has detected an abnormal voltage level in the vehicle's electrical system. 2.

What are the common symptoms of the P0560 code in a 2014 GMC Sierra?

Symptoms may include dim or flickering headlights, issues with starting the vehicle, erratic gauge readings, trouble codes for other systems, or the battery warning light illuminated on the dashboard. 3.

What causes the P0560 code in a 2014 GMC Sierra?

Common causes include a failing alternator, a defective battery, corroded or loose battery terminals, damaged wiring or connectors in the charging system, or a faulty PCM. 4.

Can a bad alternator cause the P0560 code?

Yes, a failing alternator that cannot maintain proper voltage levels is one of the most common causes of the P0560 code. 5.

How do I diagnose the P0560 code on my 2014 GMC Sierra?

Start by checking the battery voltage with a multimeter, inspect battery terminals and connections, test the alternator output, and check for damaged wiring or connectors in the charging system. 6.

Can a weak battery trigger the P0560 code?

Yes, a weak or failing battery that cannot provide sufficient voltage can cause the PCM to detect a system voltage malfunction. 7.

Is it safe to drive with the P0560 code on my 2014 GMC Sierra?

Driving with this code can risk causing further electrical damage or leaving you stranded if the battery dies. Itâ€™s best to address the issue promptly. 8.

How do I fix the P0560 code on a 2014 GMC Sierra?

Repairs may include replacing a failing alternator, installing a new battery, cleaning or tightening battery terminals, repairing damaged wiring, or updating/reprogramming the PCM if needed. 9.

Can a blown fuse cause the P0560 code?

While less common, a blown fuse in the charging or electrical system can disrupt voltage regulation and trigger this code. 10.

How much does it cost to fix the P0560 code on a 2014 GMC Sierra?

The cost depends on the cause. Replacing a battery may cost $100-$200, an alternator $300-$600, while wiring or PCM repairs vary widely. Always get a proper diagnosis to avoid unnecessary repairs.