B3950 2014 Chevrolet Silverado Code - Left Rear Turn Signal Circuit
Quick Answer
Ground is applied at all times to the turn signal/multifunction switch. Common causes include Faulty Left Rear Turn Signal Lamp, Left Rear Turn Signal Lamp harness is open or shorted, Left Rear 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
- B3950 2014 Chevrolet Silverado indicates Left Rear Turn Signal Circuit.
- Common causes
- Common causes include Faulty Left Rear Turn Signal Lamp, Left Rear Turn Signal Lamp harness is open or shorted, Left Rear 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 B3950 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3950 2014 Chevrolet Silverado?
- Faulty Left Rear Turn Signal Lamp
- Left Rear Turn Signal Lamp harness is open or shorted
- Left Rear Turn Signal Lamp circuit poor electrical connection
How to Fix the DTC B3950 2014 Chevrolet Silverado?
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
B3950:02 Left Rear Turn Signal Circuit Short to Ground
B3950:04 Left Rear Turn Signal Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3950 2014 Chevrolet Silverado 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 B3950 2014 Chevrolet Silverado Code
1. What does the OBDII code B3950 mean on a 2014 Chevrolet Silverado?
B3950 indicates an issue with the left rear turn signal circuit, such as a malfunction or open/short in the wiring or component.
2. What are the common symptoms of the B3950 code in a 2014 Silverado?
Symptoms include the left rear turn signal not working, rapid flashing of the turn signal indicator, or a warning light on the dashboard.
3. What causes the B3950 code to appear?
Common causes include a burned-out left rear turn signal bulb, damaged wiring, a faulty bulb socket, or a malfunctioning Body Control Module (BCM).
4. How do I diagnose the B3950 code in my Silverado?
Start by visually inspecting the left rear turn signal bulb and socket, checking for damage or corrosion. Then, test the wiring for continuity and scan the BCM for additional trouble codes.
5. Can a burned-out bulb trigger the B3950 code?
Yes, a burned-out left rear turn signal bulb is one of the most common reasons for this code.
6. How do I fix the B3950 code on my 2014 Silverado?
Replace the left rear turn signal bulb if it’s burned out. If the bulb is fine, check and repair or replace damaged wiring, connectors, or the bulb socket. If necessary, reprogram or replace the BCM.
7. Can a faulty BCM cause the B3950 code?
Yes, a malfunctioning Body Control Module can cause the B3950 code if it’s unable to properly control the turn signal circuit.
8. How much does it cost to fix the B3950 code on a 2014 Silverado?
The cost varies depending on the issue, ranging from $10–$30 for a new bulb to $200–$1,000 if the BCM needs replacement or reprogramming.
9. Can I drive my 2014 Silverado with the B3950 code active?
It’s not recommended to drive for extended periods with this code active, as the left rear turn signal not working can pose a safety hazard.
10. Will clearing the code fix the B3950 issue?
Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return. Proper diagnosis and repair are necessary.
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