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Engine-Codes – GMC – B3875 2014 GMC Sierra

B3875 2014 GMC Sierra Code - Windshield Wiper High Speed Relay Circuit

Quick Answer

The B3875 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Windshield Wiper High Speed Relay Circuit. Common causes include Faulty high-speed relay, Wiring issues or shorts in the circuit, Corrosion or loose connections in the relay circuit. 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
B3875 2014 GMC Sierra indicates Windshield Wiper High Speed Relay Circuit.
Common causes
Common causes include Faulty high-speed relay, Wiring issues or shorts in the circuit, Corrosion or loose connections in the relay circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B3875 2014 GMC Sierra Description

The B3875 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Windshield Wiper High Speed Relay Circuit. This code indicates that there is a malfunction in the circuit responsible for controlling the high-speed operation of the windshield wipers. The windshield wiper system in a vehicle is crucial for maintaining visibility in adverse weather conditions, such as rain or snow. When this circuit malfunctions, it can lead to issues with the proper functioning of the windshield wipers, potentially compromising the driver's visibility and overall safety.

OBDII Code B3875 2014 GMC Sierra - Windshield Wiper High Speed Relay Circuit
B3875 2014 GMC Sierra Code - Windshield Wiper High Speed Relay Circuit

Common Causes of B3875 2014 GMC Sierra

  1. Faulty high-speed relay.
  2. Wiring issues or shorts in the circuit.
  3. Corrosion or loose connections in the relay circuit.
  4. Defective windshield wiper motor.
  5. Issues with the control switch or module.

Symptoms of B3875 2014 GMC Sierra

  1. Windshield wipers not operating at high speed.
  2. Intermittent operation of the windshield wipers.
  3. Wipers getting stuck or pausing during operation.
  4. Wipers not responding to the control switch.

How to Fix B3875 2014 GMC Sierra

  1. Begin by performing a thorough inspection of the windshield wiper high-speed relay circuit, checking for any visible damage, corrosion, or loose connections.
  2. Test the high-speed relay using a multimeter to determine if it is functioning correctly. Replace the relay if it is found to be faulty.
  3. Inspect the wiring in the circuit for any signs of damage or shorts. Repair or replace any damaged wiring as needed.
  4. Test the windshield wiper motor to ensure it is working properly. Replace the motor if it is found to be defective.
  5. Check the control switch or module for any issues and replace if necessary.

Cost to Fix B3875 2014 GMC Sierra

The cost of repairing the windshield wiper high-speed relay circuit can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair can range from $50 to $150, while labor costs can range from $100 to $200. Overall, the total repair cost for addressing the B3875 code in a 2014 GMC Sierra is typically between $150 and $350. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific repair shop. It's recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3875 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code B3875 in a 2014 GMC Sierra related to the Windshield Wiper High Speed Relay Circuit?

- Common symptoms include the windshield wipers operating only at one speed, particularly the high speed setting, or the wipers not working at all.

2. What are the possible causes of OBDII code B3875 in a 2014 GMC Sierra associated with the Windshield Wiper High Speed Relay Circuit?

- Possible causes may include a faulty high-speed relay, damaged wiring or connectors in the wiper circuit, or a malfunctioning wiper motor.

3. How can I diagnose the Windshield Wiper High Speed Relay Circuit issue triggering OBDII code B3875 in my 2014 GMC Sierra?

- Use a multimeter to test the high-speed relay, check for continuity in the wiring, inspect the wiper motor for any signs of damage, and ensure all connections are secure.

4. Can a DIY enthusiast repair OBDII code B3875 in a 2014 GMC Sierra related to the Windshield Wiper High Speed Relay Circuit?

- Yes, if you have basic electrical knowledge and the necessary tools, you may be able to repair the issue by replacing the faulty relay, repairing damaged wiring, or fixing the wiper motor.

5. Is it safe to continue driving my 2014 GMC Sierra with OBDII code B3875 triggered by the Windshield Wiper High Speed Relay Circuit problem?

- It is not recommended to drive the vehicle in heavy rain or adverse weather conditions as the windshield wipers may not function properly. It's best to address the issue promptly.

6. How do I reset OBDII code B3875 in a 2014 GMC Sierra after repairing the Windshield Wiper High Speed Relay Circuit problem?

- To reset the code, use an OBDII scanner to clear the diagnostic trouble codes stored in the vehicle's computer after the repair has been completed successfully.

7. Are there any preventive maintenance tips to avoid encountering OBDII code B3875 in a 2014 GMC Sierra due to Windshield Wiper High Speed Relay Circuit issues?

- Regularly inspect and maintain the windshield wiper system, including checking the relays, wiring, and motor for any signs of wear or damage to prevent potential issues.

8. How crucial is it to address OBDII code B3875 in a 2014 GMC Sierra related to the Windshield Wiper High Speed Relay Circuit promptly?

- Promptly addressing the issue is essential to ensure the proper functioning of the windshield wipers, which are crucial for visibility and safety while driving, especially in adverse weather conditions.

9. Can extreme weather conditions contribute to triggering OBDII code B3875 in a 2014 GMC Sierra associated with the Windshield Wiper High Speed Relay Circuit?

- Yes, extreme weather conditions such as heavy rain, snow, or ice can put additional strain on the wiper system components, potentially leading to issues like relay failures or circuit disruptions.

10. How long does it typically take to repair OBDII code B3875 in a 2014 GMC Sierra caused by problems in the Windshield Wiper High Speed Relay Circuit?

- The repair time can vary depending on the specific issue, but simple fixes like relay replacement may take around 30 minutes to an hour, while more complex problems could require longer troubleshooting and repair time.

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