AutoCodes – GMC – P0560 2017 GMC Sierra

P0560 2017 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 2017 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 193

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 2017 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 2017 GMC Sierra - System Voltage Malfunction - AutoCodes.com — P0560 2017 GMC Sierra Code - System Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC P0560 2017 GMC Sierra?

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

How to Fix the DTC P0560 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P0560 2017 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 2017 GMC Sierra Code

1. What does the OBDII code P0560 mean on a 2017 GMC Sierra?

P0560 indicates a "System Voltage Malfunction," meaning the vehicle's powertrain control module (PCM) has detected an issue with the electrical system's voltage being outside the normal range.

2. What are the common symptoms of code P0560 in a 2017 GMC Sierra?

Symptoms may include difficulty starting the engine, dim or flickering lights, warning lights on the dashboard, erratic instrument cluster behavior, or poor engine performance.

3. What causes the P0560 code to appear on a 2017 GMC Sierra?

Common causes include a faulty alternator, a bad battery, loose or corroded battery terminals, damaged wiring, or an issue with the PCM itself.

4. Can a failing alternator trigger the P0560 code in a 2017 GMC Sierra?

Yes, a failing alternator can cause the system voltage to drop or fluctuate, which can trigger the P0560 code.

5. How can I diagnose the P0560 code on my 2017 GMC Sierra?

Start by checking the battery voltage with a multimeter. Inspect the battery terminals, alternator, and wiring for damage or corrosion. If no issues are found, further diagnostics using a scan tool may be required.

6. Is it safe to drive with the P0560 code on a 2017 GMC Sierra?

Driving with this code can be risky, as electrical system issues may lead to stalling, loss of power, or failure of critical systems like the headlights or power steering.

7. How do I fix the P0560 code on a 2017 GMC Sierra?

Repairs may include replacing a failing alternator or battery, cleaning or tightening battery terminals, fixing damaged wiring, or reprogramming or replacing the PCM if necessary.

8. Can a weak battery cause the P0560 code on a 2017 GMC Sierra?

Yes, a weak or failing battery can cause low voltage, leading to the P0560 code.

9. How much does it typically cost to fix the P0560 code on a 2017 GMC Sierra?

Repair costs can range from $100 for battery terminal cleaning to $500â€“$1,000 for an alternator replacement or PCM repair, depending on the specific issue.

10. Will clearing the P0560 code solve the problem on a 2017 GMC Sierra?

Clearing the code may temporarily remove the warning, but the underlying electrical issue must be fixed to prevent the code from returning.