Engine-CodesGMC – B1517 2016 GMC Sierra

B1517 2016 GMC Sierra Code - Battery Voltage Low Or High

Quick Answer

The B1517 diagnostic trouble code for a 2016 GMC Sierra indicates that the battery voltage in the vehicle is either too low or too high. Common causes include Faulty alternator, Malfunctioning voltage regulator, Corroded battery terminals. 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
B1517 2016 GMC Sierra indicates Battery Voltage Low Or High.
Common causes
Common causes include Faulty alternator, Malfunctioning voltage regulator, Corroded battery terminals.
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.
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code B1517 2016 GMC Sierra Description

The B1517 diagnostic trouble code for a 2016 GMC Sierra indicates that the battery voltage in the vehicle is either too low or too high. This can have significant implications for the vehicle's performance and overall functionality. The battery voltage is a critical component in the electrical system of the vehicle, as it provides the necessary power to start the engine, run various electrical components, and recharge the battery while the engine is running.

OBDII Code B1517 2016 GMC Sierra - Battery Voltage Low Or High
B1517 2016 GMC Sierra Code - Battery Voltage Low Or High

Common Causes of B1517 2016 GMC Sierra

  1. Faulty alternator
  2. Malfunctioning voltage regulator
  3. Corroded battery terminals
  4. Loose or damaged wiring
  5. Failing battery

Symptoms of B1517 2016 GMC Sierra

  1. Difficulty starting the engine
  2. Dimming headlights
  3. Erratic behavior of electrical components
  4. Stalling of the vehicle

How to Fix B1517 2016 GMC Sierra

  1. Test the battery voltage using a multimeter to determine if it is too low or too high.
  2. Inspect the alternator and voltage regulator for any signs of damage or malfunction.
  3. Check the battery terminals for corrosion and clean them if necessary.
  4. Inspect the wiring harness for any loose or damaged connections.
  5. Replace the alternator, voltage regulator, battery, or any other faulty components as needed.

Cost to Fix B1517 2016 GMC Sierra

The typical repair costs for addressing a battery voltage low or high issue can vary depending on the specific cause of the problem. In general, replacing a faulty alternator can cost between $500 and $800, while a new battery may range from $100 to $200. Labor costs can add an additional $100 to $200 per hour, with total repair costs potentially reaching $800 to $1500 or more. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle.

Tech Notes for B1517 2016 GMC Sierra

- B1517 03: Battery Voltage Low Voltage

- B1517 07: Battery Voltage High Voltage

- B1517 5A : Battery Voltage Not Plausible

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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 B1517 2016 GMC Sierra Code

1. What does OBDII code B1517 mean on a 2016 GMC Sierra?

Code B1517 indicates that the vehicle's control module has detected the battery voltage is either too low or too high, outside the normal operating range.

2. What are the common symptoms of code B1517 in a 2016 GMC Sierra?

Symptoms may include a battery warning light on the dashboard, dim or flickering headlights, difficulty starting the engine, or intermittent electrical issues.

3. What causes the B1517 code to appear on a 2016 GMC Sierra?

Common causes include a weak or failing battery, a faulty alternator, corroded or loose battery terminals, or issues with wiring and connections in the charging system.

4. Can I drive my 2016 GMC Sierra with the B1517 code?

It’s not recommended, as electrical issues could worsen and potentially leave you stranded. Address the issue as soon as possible to avoid further damage.

5. How do I diagnose the B1517 code on my 2016 GMC Sierra?

Start by checking the battery voltage with a multimeter, inspecting the battery terminals for corrosion, and testing the alternator’s output to ensure it’s functioning properly.

6. Does a weak battery always cause the B1517 code?

Not always. While a weak battery is a common cause, the code can also be triggered by a failing alternator, poor wiring, or loose connections in the charging system.

7. How do I fix the B1517 code on a 2016 GMC Sierra?

Repairs may involve replacing a failing battery or alternator, cleaning or tightening battery terminals, or repairing damaged wiring in the charging system.

8. How much does it cost to fix the B1517 code on a GMC Sierra?

Costs vary depending on the issue. Replacing a battery costs $100–$300, while an alternator replacement can range from $400–$800. Minor fixes like cleaning terminals are inexpensive.

9. Can extreme weather cause the B1517 code to appear?

Yes, extreme cold or heat can strain the battery and charging system, potentially triggering a low or high voltage condition.

10. How can I prevent the B1517 code from recurring?

Regularly maintain your battery and charging system by keeping terminals clean, testing the battery and alternator periodically, and replacing components as they age.

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