AutoCodes – GMC – B3962 GMC

B3962 GMC Code - Seat Motors Over Current

Quick Answer

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. Common causes include Faulty Adjuster Motor Assembly, Adjuster Motor Assembly harness is open or shorted, Adjuster Motor Assembly 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: B3962 GMC indicates Seat Motors Over Current.
Common causes: Common causes include Faulty Adjuster Motor Assembly, Adjuster Motor Assembly harness is open or shorted, Adjuster Motor Assembly 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 544

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3962 GMC Description

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits. The Diagnostic Trouble Code (DTC) sets when a motor control circuit current monitored by the DSM is determined to be shorted to ground.

OBDII Code B3962 GMC - Seat Motors Over Current - AutoCodes.com — B3962 GMC Code - Seat Motors Over Current

What does this mean?

What are the Possible Causes of the DTC B3962 GMC?

Faulty Adjuster Motor Assembly
Adjuster Motor Assembly harness is open or shorted
Adjuster Motor Assembly circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B3962 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 B3962 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.

Need more information about the B3962 GMC code?

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Need Help with the Code?

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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 B3962 GMC Code

1. What are the common symptoms of OBDII code B3962 GMC (Seat Motors Over Current)?

Symptoms may include non-responsive seat motors, erratic movement of the seat, or the seat getting stuck in one position.

2. What causes the OBDII code B3962 GMC to trigger?

This code is typically triggered when the seat motors draw more current than expected, indicating a potential issue with the motors or the seat control module.

3. How can I diagnose the root cause of OBDII code B3962 GMC?

Diagnosing this code may involve checking the seat motor wiring for shorts or damage, testing the seat motors for proper function, and inspecting the seat control module for faults.

4. Are there any DIY repair tips for fixing OBDII code B3962 GMC?

If you're comfortable with automotive electrical work, you can try checking and repairing any damaged wiring connections to the seat motors or replacing faulty seat motors to resolve the issue.

5. Can a malfunctioning seat position sensor cause OBDII code B3962 GMC to appear?

While a malfunctioning seat position sensor may not directly trigger this code, it can contribute to issues with the seat motors that may lead to the over current condition.

6. Is it safe to continue driving with OBDII code B3962 GMC active?

It is not recommended to drive with this code active, as it may affect the functionality of the power seat, potentially causing discomfort or safety hazards while driving.

7. How much does it typically cost to repair OBDII code B3962 GMC at a professional auto repair shop?

Repair costs can vary depending on the specific cause of the issue, but you can expect to pay for diagnostic time, parts, and labor, which may range from a couple hundred to a few hundred dollars.

8. Can resetting the OBDII code B3962 GMC resolve the issue temporarily?

Resetting the code may temporarily clear the warning light, but if the underlying issue with the seat motors or control module is not addressed, the code is likely to reappear.

9. Will disconnecting the car battery reset OBDII code B3962 GMC?

Disconnecting the car battery may reset the code temporarily, but it is important to address the root cause of the issue to prevent the code from coming back.

10. Are there any recalls or technical service bulletins related to OBDII code B3962 GMC for certain vehicle models?

Check with your vehicle manufacturer or authorized dealership to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle model.