B3950 2017 Chevrolet Silverado Code - Left Rear Turn Signal Circuit

The B3950 code indicates a fault in the left rear turn signal circuit, typically due to a wiring or component issue.

Common symptoms include the left rear turn signal not working, rapid flashing of the turn signal indicator, or the turn signal staying on without blinking.

The code can be caused by a blown bulb, damaged wiring, a faulty turn signal socket, or a malfunctioning Body Control Module (BCM).

Yes, a burnt-out or improperly installed left rear turn signal bulb is a common cause of this code.

Start by checking the left rear turn signal bulb and socket for damage or corrosion, then inspect the wiring and connectors for breaks or loose connections.

While rare, a faulty BCM can cause this code, but it is more likely to be a wiring or bulb issue. The BCM should only be considered after other components are tested.

Yes, but it is unsafe as the left rear turn signal may not function properly, potentially leading to miscommunication with other drivers.

Repair or replace the left rear turn signal bulb, inspect and fix any damaged wiring, clean the socket if corroded, and clear the code with an OBDII scanner.

No, clearing the code without addressing the underlying issue will only temporarily remove the code, and it will likely return.

Costs vary depending on the issue, with bulb replacements costing around $10-$20, while wiring or BCM repairs may cost significantly more, potentially exceeding $200-$500.