B3949 2017 GMC Sierra Code - Right Front Turn Signal Circuit
Quick Answer
Ground is applied at all times to the turn signal/multifunction switch. Common causes include Faulty Right Front Turn Signal Lamp, Right Front Turn Signal Lamp harness is open or shorted, Right Front Turn Signal Lamp circuit poor electrical 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
- B3949 2017 GMC Sierra indicates Right Front Turn Signal Circuit.
- Common causes
- Common causes include Faulty Right Front Turn Signal Lamp, Right Front Turn Signal Lamp harness is open or shorted, Right Front Turn Signal Lamp circuit poor electrical 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.
Code B3949 2017 GMC Sierra Description
What are the Possible Causes of the DTC B3949 2017 GMC Sierra?
- Faulty Right Front Turn Signal Lamp
- Right Front Turn Signal Lamp harness is open or shorted
- Right Front Turn Signal Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3949 2017 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 B3949 2017 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.
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Frequently Asked Questions about B3949 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code B3949 on a 2017 GMC Sierra related to the right front turn signal circuit?
The common symptoms include the right front turn signal not functioning properly or flickering intermittently.
2. What are the potential causes of OBDII code B3949 on a 2017 GMC Sierra related to the right front turn signal circuit?
Possible causes include a faulty turn signal bulb, damaged wiring or connectors, a malfunctioning turn signal switch, or a defective turn signal control module.
3. How can I diagnose the issue associated with OBDII code B3949 on a 2017 GMC Sierra's right front turn signal circuit?
You can start by visually inspecting the right front turn signal bulb, wiring, and connectors for any visible damage. Testing the turn signal switch and control module with a multimeter may also help pinpoint the problem.
4. What steps can I take to repair OBDII code B3949 on a 2017 GMC Sierra related to the right front turn signal circuit?
Depending on the root cause, you may need to replace the faulty turn signal bulb, repair or replace damaged wiring/connectors, replace the turn signal switch, or replace the turn signal control module.
5. Can a DIY enthusiast fix OBDII code B3949 on a 2017 GMC Sierra's right front turn signal circuit?
Yes, some repairs related to this code can be performed by a DIY enthusiast, especially tasks like replacing the turn signal bulb or checking for damaged wiring. However, more complex issues may require professional assistance.
6. Are there any safety concerns associated with OBDII code B3949 on a 2017 GMC Sierra's right front turn signal circuit?
Yes, driving with a malfunctioning turn signal can pose a safety risk as it may lead to confusion for other drivers on the road. It is important to address the issue promptly.
7. Can weather conditions affect the right front turn signal circuit on a 2017 GMC Sierra and trigger OBDII code B3949?
Extreme weather conditions or exposure to moisture can potentially damage the turn signal components, leading to issues that trigger the OBDII code B3949.
8. Is resetting the vehicle's computer system a recommended step to clear OBDII code B3949 on a 2017 GMC Sierra's right front turn signal circuit?
While resetting the computer system may temporarily clear the code, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.
9. How can I prevent OBDII code B3949 from appearing on a 2017 GMC Sierra's right front turn signal circuit in the future?
Regularly inspecting and maintaining the turn signal components, including bulbs, wiring, and connectors, can help prevent issues that trigger this OBDII code.
10. Can a scan tool be used to reset OBDII code B3949 on a 2017 GMC Sierra's right front turn signal circuit?
A scan tool can be used to clear the code after the underlying issue has been addressed and repaired. This ensures that the code is not just cleared temporarily without fixing the root cause.
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