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Engine-Codes – GMC – B3708 GMC

B3708 GMC Code - Front Washer Motor Input High

Quick Answer

The B3708 GMC code indicates that there is a high input signal coming from the front washer motor. Common causes include Faulty front washer motor, Short circuit in the wiring connected to the washer motor, Corrosion or damage to the electrical connectors. 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
B3708 GMC indicates Front Washer Motor Input High.
Common causes
Common causes include Faulty front washer motor, Short circuit in the wiring connected to the washer motor, Corrosion or damage to the electrical connectors.
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 Aug 19, 2024
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Code B3708 GMC Description

The B3708 GMC code indicates that there is a high input signal coming from the front washer motor. This typically means that there is an electrical issue causing the motor to receive more power than it should, which can lead to various problems with the windshield washer system. The front washer motor is responsible for supplying the necessary fluid to clean the windshield, and when it receives a high input signal, it may not function properly, leading to reduced visibility for the driver.

OBDII Code B3708 GMC - Front Washer Motor Input High
B3708 GMC Code - Front Washer Motor Input High

Common Causes of B3708 GMC

  1. Faulty front washer motor.
  2. Short circuit in the wiring connected to the washer motor.
  3. Corrosion or damage to the electrical connectors.
  4. Issues with the washer fluid pump.
  5. Malfunctioning washer fluid level sensor.

Symptoms of B3708 GMC

  1. Windshield washer fluid not spraying onto the windshield.
  2. Washer fluid spraying intermittently or in an erratic manner.
  3. Washer motor making unusual or loud noises when activated.
  4. Washer fluid leaking from the motor or tubing.
  5. Washer fluid reservoir running out quickly due to excessive usage.

How to Fix B3708 GMC

  1. Begin by inspecting the front washer motor and its wiring for any visible damage or corrosion.
  2. Test the electrical connections and the voltage going to the motor to determine if there is a high input signal.
  3. Replace the front washer motor if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors.
  5. Test the system after the repair to ensure that the issue has been resolved.

Cost to Fix B3708 GMC

The typical repair cost for addressing a Front Washer Motor Input High code can range from $100 to $300, depending on the extent of the damage and whether any parts need to be replaced. This estimate includes both parts and labor. However, actual costs may vary depending on the location, vehicle make and model, and the specific diagnosis and repair process required. 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 B3708 GMC Code

1. What are the common symptoms of OBDII code B3708 GMC (Front Washer Motor Input High)?

The common symptoms include the front windshield washer not functioning properly, excessive noise coming from the washer motor, and warning lights illuminated on the dashboard.

2. What are the possible causes of OBDII code B3708 GMC?

Possible causes of this code include a faulty front washer motor, a short circuit in the wiring related to the washer system, or a problem with the washer motor control module.

3. How can I diagnose OBDII code B3708 GMC?

Diagnosing this code involves inspecting the front washer motor and its wiring for any visible damage, testing the motor's functionality, and using a diagnostic scanner to check for stored fault codes in the vehicle's system.

4. What are some repair tips for fixing OBDII code B3708 GMC?

Repair tips for this code may include replacing the front washer motor if it's found to be faulty, repairing any damaged wiring in the washer system, and resetting the fault codes after completing the repairs.

5. Can I drive my vehicle with OBDII code B3708 GMC?

It's not recommended to drive your vehicle with this code present, as it indicates a malfunction in the front washer system that can affect visibility and safety while driving.

6. How much does it typically cost to repair OBDII code B3708 GMC?

The cost of repairing this code can vary depending on the extent of the issue and the specific repairs needed. On average, you may expect to spend anywhere from $100 to $300 for parts and labor.

7. Is OBDII code B3708 GMC a serious issue?

While this code may not directly impact the drivability of the vehicle, it's still important to address it promptly to ensure proper functioning of the front washer system and maintain safety on the road.

8. Can OBDII code B3708 GMC be reset without repairs?

Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely resurface until the root cause is fixed.

9. How long does it take to repair OBDII code B3708 GMC?

The repair time for this code can vary depending on the exact cause of the issue and the availability of parts. In general, a skilled mechanic can typically resolve the problem within a few hours.

10. Is OBDII code B3708 GMC a common issue in GMC vehicles?

While not extremely common, issues related to the front washer motor input high can occur in GMC vehicles, especially in older models or those with high mileage. Regular maintenance can help prevent such issues.

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