AutoCodes – GMC – B3708 GMC

B3708 GMC Code - Front Washer Motor Input High

Quick Answer

The Body Control Module (BCM) monitors the windshield washer pump control circuit. Common causes include Faulty Front Washer Motor, Front Washer Motor harness is open or shorted, Front Washer Motor 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: B3708 GMC indicates Front Washer Motor Input High.
Common causes: Common causes include Faulty Front Washer Motor, Front Washer Motor harness is open or shorted, Front Washer Motor 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.

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Code Popularity 536

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3708 GMC Description

The Body Control Module (BCM) monitors the windshield washer pump control circuit. When a front windshield wash is requested for more than 2 minutes, the BCM will turn OFF the windshield washer pump if the front wiper is NOT requested by the wiper switch.
Battery voltage for the windshield washer pump is supplied through the FRT WIPER 25 A fuse and windshield wiper washer switch. Grounding for the windshield washer pump is through the OFF position of the rear washer switch, when equipped. The Diagnostic Trouble Code (DTC) sets when the front windshield washer pump control circuit is shorted to battery voltage for 2 minutes.

OBDII Code B3708 GMC - Front Washer Motor Input High - AutoCodes.com — B3708 GMC Code - Front Washer Motor Input High

What does this mean?

What are the Possible Causes of the DTC B3708 GMC?

Faulty Front Washer Motor
Front Washer Motor harness is open or shorted
Front Washer Motor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3708 GMC?

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 B3708 GMC 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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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.