B3875 2016 GMC Sierra Code - Windshield Wiper High Speed Relay Circuit
Quick Answer
The windshield wiper motor is controlled by the Body Control Module (BCM) through the windshield wiper replay and the windshield wiper speed control relay. Common causes include Faulty Windshield Wiper Relay, Windshield Wiper Relay harness is open or shorted, Windshield Wiper Relay 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
- B3875 2016 GMC Sierra indicates Windshield Wiper High Speed Relay Circuit.
- Common causes
- Common causes include Faulty Windshield Wiper Relay, Windshield Wiper Relay harness is open or shorted, Windshield Wiper Relay 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 B3875 2016 GMC Sierra Description
What are the Possible Causes of the DTC B3875 2016 GMC Sierra?
- Faulty Windshield Wiper Relay
- Windshield Wiper Relay harness is open or shorted
- Windshield Wiper Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3875 2016 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 B3875 2016 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 B3875 2016 GMC Sierra Code
1. What does the OBDII code B3875 mean on a 2016 GMC Sierra?
The B3875 code indicates an issue with the Windshield Wiper High Speed Relay Circuit, which controls the high-speed operation of the windshield wipers.
2. What are the common symptoms of the B3875 code in a GMC Sierra?
Symptoms may include the wipers not working at high speed, wipers stuck in one position, or intermittent wiper operation.
3. What causes the B3875 code to appear?
Common causes include a faulty high-speed wiper relay, damaged wiring, corroded connectors, or a malfunctioning windshield wiper motor.
4. Can I still drive my 2016 GMC Sierra with the B3875 code?
Yes, but your windshield wipers may not function properly at high speed, which could reduce visibility during heavy rain and compromise safety.
5. How do I diagnose the B3875 code on my GMC Sierra?
Diagnosis involves checking the high-speed wiper relay, inspecting the wiring and connectors for damage or corrosion, and testing the windshield wiper motor for proper operation.
6. How do I fix the B3875 code on a 2016 GMC Sierra?
Repairs may include replacing the high-speed wiper relay, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the windshield wiper motor.
7. Where is the high-speed wiper relay located in the 2016 GMC Sierra?
The high-speed wiper relay is typically located in the under-hood fuse box, but refer to the owner’s manual for the exact location.
8. How much does it cost to repair the B3875 code on a GMC Sierra?
Repair costs vary but may range from $100 to $300, depending on whether the issue is with the relay, wiring, or wiper motor.
9. Can a faulty windshield wiper motor trigger the B3875 code?
Yes, a malfunctioning windshield wiper motor can prevent high-speed operation and trigger the B3875 code.
10. Can I reset the B3875 code without fixing the issue?
You can clear the code with an OBDII scanner, but the issue will likely return if the underlying problem isn’t resolved.
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