P0563 2017 GMC Sierra Code - System Voltage High
Quick Answer
The P0563 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the system voltage is high. Common causes include Faulty voltage regulator, Malfunctioning alternator, Wiring issues such as a short circuit or loose connection. 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
- P0563 2017 GMC Sierra indicates System Voltage High.
- Common causes
- Common causes include Faulty voltage regulator, Malfunctioning alternator, Wiring issues such as a short circuit or loose connection.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0563 2017 GMC Sierra Description
The P0563 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that the system voltage is high. This code is triggered when the powertrain control module (PCM) detects that the vehicle's voltage is above the normal operating range. The normal voltage range for most vehicles is typically between 13.5 and 14.5 volts when the engine is running. When the voltage exceeds this range, it can lead to various issues within the vehicle's electrical system.
Common Causes of P0563 2017 GMC Sierra
- Faulty voltage regulator.
- Malfunctioning alternator.
- Wiring issues such as a short circuit or loose connection.
- Failing battery unable to hold a charge.
- Problem with the powertrain control module (PCM).
Symptoms of P0563 2017 GMC Sierra
- Dimming or flickering lights on the dashboard or exterior of the vehicle.
- Erratic behavior of electrical components such as power windows, radio, or air conditioning.
- Difficulty starting the vehicle or frequent battery drain.
- Check engine light illuminated on the dashboard.
- Voltage gauge showing higher than normal readings.
How to Fix P0563 2017 GMC Sierra
- Begin by checking the battery voltage using a multimeter to ensure it is within the normal range.
- Inspect the alternator and voltage regulator for any signs of damage or wear. Replace if necessary.
- Check the wiring harness for any visible damage, corrosion, or loose connections. Repair or replace as needed.
- Test the PCM for any fault codes or issues that may be causing the high system voltage. Reset or replace the PCM if necessary.
- Clear the DTC using a scan tool and monitor the system voltage to ensure it is within the normal range.
Cost to Fix P0563 2017 GMC Sierra
The cost of repairing a high system voltage issue can vary depending on the specific cause of the problem. On average, the cost of parts such as a new alternator or voltage regulator can range from $200 to $500. Labor costs for diagnosis and repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.
Tech Notes for P0563 2017 GMC Sierra
Need more information about the P0563 2017 GMC Sierra code?
Need more information on how to fix the P0563 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0563 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0563 2017 GMC Sierra Code
1. What does the OBDII code P0563 mean on a 2017 GMC Sierra?
P0563 indicates that the vehicle's powertrain control module (PCM) has detected excessively high system voltage, typically above 16 volts.
2. What are the common symptoms of code P0563 in a 2017 GMC Sierra?
Symptoms may include the battery warning light illuminating, dimming or flickering headlights, erratic electrical system behavior, or difficulty starting the engine.
3. What causes the P0563 code to appear in a 2017 GMC Sierra?
Common causes include a faulty alternator, defective voltage regulator, loose or corroded battery connections, or a damaged PCM.
4. Can I drive my 2017 GMC Sierra with a P0563 code?
Driving with this code is not recommended because high voltage can damage sensitive electrical components and lead to further issues.
5. How do I diagnose the P0563 code in my 2017 GMC Sierra?
Start by checking the battery voltage with a multimeter, inspect battery terminals for corrosion, test the alternator output, and verify the voltage regulator operation.
6. How can I fix the P0563 code on my 2017 GMC Sierra?
Repairs might include replacing a faulty alternator or voltage regulator, cleaning or tightening battery connections, or replacing a damaged PCM.
7. Can a bad alternator cause the P0563 code?
Yes, a malfunctioning alternator that overcharges the electrical system can trigger the P0563 code.
8. Will clearing the P0563 code fix the problem on my 2017 GMC Sierra?
Clearing the code without addressing the root cause will not resolve the issue, and the code will likely return.
9. Is the P0563 code related to the battery in my 2017 GMC Sierra?
It can be related if the battery is overcharged due to a defective alternator or voltage regulator, or if there are poor battery connections.
10. How much does it cost to fix the P0563 code on a 2017 GMC Sierra?
Repair costs depend on the cause but can range from $100 to $500, with alternator replacement typically being the most expensive fix.
Discuss the causes and fixes for P0563 2017 GMC Sierra OBDII Code
Code P0563 2017 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.