B1517 2018 GMC Sierra Code - Battery Voltage Low Or High
Quick Answer
The B1517 diagnostic trouble code for a 2018 GMC Sierra indicates that the battery voltage is either too low or too high. Common causes include Faulty alternator, Weak or failing battery, Corroded or loose 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 2018 GMC Sierra indicates Battery Voltage Low Or High.
- Common causes
- Common causes include Faulty alternator, Weak or failing battery, Corroded or loose 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.
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Code B1517 2018 GMC Sierra Description
The B1517 diagnostic trouble code for a 2018 GMC Sierra indicates that the battery voltage is either too low or too high. This issue can have significant implications for the vehicle's performance and overall health. The battery voltage is crucial for the proper functioning of various electrical components in the vehicle, including the starter, alternator, and various sensors. When the battery voltage is outside the normal range, it can lead to erratic behavior in these systems, potentially causing the vehicle to stall, have difficulty starting, or experience electrical malfunctions.
Common Causes of B1517 2018 GMC Sierra
- Faulty alternator
- Weak or failing battery
- Corroded or loose battery terminals
- Issues with the vehicle's charging system
- Electrical system malfunctions
Symptoms of B1517 2018 GMC Sierra
- Difficulty starting the vehicle
- Dimming or flickering headlights
- Electrical malfunctions such as power windows not working properly
- Dashboard warning lights related to the battery or charging system
- Engine stalling or rough idling
How to Fix B1517 2018 GMC Sierra
- Begin by checking the battery voltage using a multimeter to determine if it is too low or too high.
- Inspect the alternator for proper functioning and output voltage.
- Check the battery terminals for corrosion or looseness and clean or tighten them as needed.
- Test the vehicle's charging system to ensure it is functioning correctly.
- Replace the alternator or battery if either is found to be faulty.
Cost to Fix B1517 2018 GMC Sierra
The typical repair costs for addressing a low or high battery voltage issue can vary depending on the specific cause of the problem. In general, replacing a faulty alternator can cost between $400 and $800, while a new battery may range from $100 to $200. Labor costs for these repairs can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. It's advisable to consult with a trusted mechanic to get a more accurate estimate based on the specific circumstances of your vehicle.
Tech Notes for B1517 2018 GMC Sierra
- B1517 07: Battery Voltage High Voltage
- B1517 5A : Battery Voltage Not Plausible
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Frequently Asked Questions about B1517 2018 GMC Sierra Code
1. What does the OBDII code B1517 mean on a 2018 GMC Sierra?
The code B1517 indicates that the vehicle’s body control module (BCM) has detected the battery voltage is either too low or too high, outside the acceptable range.
2. What are the common symptoms of the B1517 code in a 2018 GMC Sierra?
Symptoms may include dim or flickering lights, difficulty starting the engine, warning lights on the dashboard, or intermittent electrical issues.
3. What causes the B1517 code to trigger in a 2018 GMC Sierra?
Common causes include a failing battery, issues with the alternator, corroded or loose battery terminals, or a faulty body control module (BCM).
4. Can a bad alternator cause the B1517 code in a 2018 GMC Sierra?
Yes, a faulty alternator can cause this code by supplying either insufficient or excessive voltage to the electrical system.
5. How do I diagnose the B1517 code on a 2018 GMC Sierra?
Start by checking the battery voltage with a multimeter, inspect battery connections for corrosion or looseness, test the alternator output, and scan for additional codes to identify related issues.
6. Is it safe to drive a 2018 GMC Sierra with the B1517 code?
It may not be safe, as low or high battery voltage can lead to electrical malfunctions, starting problems, or even damage to sensitive electronic components.
7. How do I fix the B1517 code on my 2018 GMC Sierra?
Repairs may involve cleaning or tightening battery terminals, replacing a weak battery, repairing or replacing the alternator, or addressing wiring issues.
8. Can extreme weather cause the B1517 code in a 2018 GMC Sierra?
Yes, extreme cold or heat can stress the battery and alternator, potentially leading to voltage issues that trigger the code.
9. How much does it cost to repair the B1517 code on a 2018 GMC Sierra?
Repair costs can vary widely, from $20 for cleaning terminals to $500 or more if the alternator or battery needs replacement.
10. Can resetting the B1517 code solve the problem on a 2018 GMC Sierra?
Resetting the code without addressing the root cause may temporarily clear the warning, but the issue is likely to return if the underlying problem isn't fixed.
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