B1517 2018 GMC Sierra Code - Battery Voltage Low Or High
Quick Answer
The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Low or High Battery Voltage, Faulty Control Module, Control Module harness is open or shorted. 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 Low or High Battery Voltage, Faulty Control Module, Control Module harness is open or shorted.
- 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.
Code B1517 2018 GMC Sierra Description
What are the Possible Causes of the DTC B1517 2018 GMC Sierra?
- Low or High Battery Voltage
- Faulty Control Module
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How to Fix the DTC B1517 2018 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.
Code Tech Notes
- B1517 07: Battery Voltage High Voltage
- B1517 5A : Battery Voltage Not Plausible
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1517 2018 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 B1517 2018 GMC Sierra code?
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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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