AutoCodes – GMC – P0560 2016 GMC Sierra

P0560 2016 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 2016 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 2016 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 2016 GMC Sierra - System Voltage Malfunction - AutoCodes.com — P0560 2016 GMC Sierra Code - System Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC P0560 2016 GMC Sierra?

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

How to Fix the DTC P0560 2016 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 2016 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 2016 GMC Sierra code?

Need more information on how to fix the P0560 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P0560 mean on a 2016 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 2016 GMC Sierra?

Symptoms include dim or flickering headlights, difficulty starting the engine, erratic dashboard behavior, battery warning lights, and possible stalling while driving.

3. What causes the P0560 code to appear on a 2016 GMC Sierra?

Common causes include a failing alternator, a weak or faulty battery, loose or corroded battery terminals, damaged wiring, or a failing powertrain control module (PCM).

4. Can I drive my 2016 GMC Sierra with the P0560 code?

While the vehicle may still be drivable, continuing to drive with this code can lead to further electrical issues, stalling, or total loss of power. Itâ€™s best to address the issue promptly.

5. How do I diagnose the P0560 code on a 2016 GMC Sierra?

Start by checking the battery voltage and terminals, inspect the alternator and its connections, and examine the wiring for any damage. A scan tool can also help monitor voltage readings in real time.

6. How do I fix the P0560 code on a 2016 GMC Sierra?

Repairs may include replacing a failing alternator, installing a new battery, cleaning or tightening battery terminals, or repairing damaged wiring. If the PCM is faulty, it may require reprogramming or replacement.

7. Can a bad alternator trigger the P0560 code on a 2016 GMC Sierra?

Yes, a failing alternator is a common cause of this code, as it may not maintain proper voltage levels in the electrical system.

8. Will resetting the code clear the P0560 fault on a 2016 GMC Sierra?

Clearing the code with an OBDII scanner will remove it temporarily, but if the root cause isnâ€™t addressed, the code will return.

9. How much does it cost to fix the P0560 code on a 2016 GMC Sierra?

Repair costs vary depending on the issue. Replacing an alternator typically costs $400-$800, while a new battery ranges from $100-$300. Wiring repairs or PCM replacement can add to the cost.

10. Can extreme weather conditions cause the P0560 code on a 2016 GMC Sierra?

Yes, extreme cold or heat can affect the batteryâ€™s performance or exacerbate existing issues in the electrical system, potentially triggering the P0560 code.