AutoCodes – GMC – B3631 GMC

B3631 GMC Code - Adjustable Foot Pedal Inhibit Circuit

Quick Answer

Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. Common causes include Faulty Instrument Panel Fuse Block, Instrument Panel Fuse Block harness is open or shorted, Instrument Panel Fuse Block 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: B3631 GMC indicates Adjustable Foot Pedal Inhibit Circuit.
Common causes: Common causes include Faulty Instrument Panel Fuse Block, Instrument Panel Fuse Block harness is open or shorted, Instrument Panel Fuse Block 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 601

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 Jun 14, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3631 GMC Description

Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The transmission park relay is controlled by the Body Control Module (BCM) through a low side drive control circuit and will be energized whenever the ignition is in the accessory, run, or crank positions and the transmission is in the P (Park) position. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground on the transmission park relay control circuit while attempting to activate the output.

OBDII Code B3631 GMC - Adjustable Foot Pedal Inhibit Circuit - AutoCodes.com — B3631 GMC Code - Adjustable Foot Pedal Inhibit Circuit

What does this mean?

What are the Possible Causes of the DTC B3631 GMC?

Faulty Instrument Panel Fuse Block
Instrument Panel Fuse Block harness is open or shorted
Instrument Panel Fuse Block circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3631 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 B3631 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 B3631 GMC code?

Need more information on how to fix the B3631 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3631 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B3631 2014 GMC Sierra — Adjustable Foot Pedal Inhibit Circuit
B3631 2015 GMC Sierra — Adjustable Foot Pedal Inhibit Circuit
B3631 2016 GMC Sierra — Adjustable Foot Pedal Inhibit Circuit
B3631 2017 GMC Sierra — Adjustable Foot Pedal Inhibit Circuit
B3631 2018 GMC Sierra — Adjustable Foot Pedal Inhibit Circuit

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 B3631 GMC Code

1. What are the common symptoms of OBDII code B3631 GMC (Adjustable Foot Pedal Inhibit Circuit)?

- Common symptoms include the inability to adjust the foot pedal position electronically and a warning light on the dashboard.

2. What are the possible causes of OBDII code B3631 GMC?

- The code may be triggered by a faulty adjustable foot pedal position sensor, wiring issues, or a malfunction in the control module.

3. How can I diagnose the Adjustable Foot Pedal Inhibit Circuit issue associated with code B3631 GMC?

- Diagnose the issue by inspecting the foot pedal position sensor, checking the wiring for any damage, and testing the control module for proper functionality.

4. Can I continue driving my vehicle with OBDII code B3631 GMC?

- It is not recommended to continue driving the vehicle with this code as it may affect the adjustability of the foot pedal position, leading to potential safety hazards.

5. How can I repair OBDII code B3631 GMC on my GMC vehicle?

- Repair the code by replacing the faulty foot pedal position sensor, repairing any damaged wiring, and resetting the control module.

6. Is it possible to reset OBDII code B3631 GMC without repairs?

- Resetting the code without addressing the underlying issue may result in it reoccurring. It is best to repair the problem first before resetting the code.

7. Are there any DIY tips for fixing OBDII code B3631 GMC at home?

- While basic troubleshooting like checking the wiring connections can be done at home, it is recommended to consult a professional mechanic for a proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code B3631 GMC at a repair shop?

- The cost of repairing this code can vary depending on the extent of the issue and the labor rates of the repair shop. It is advisable to get a few quotes from different shops.

9. Will OBDII code B3631 GMC cause my vehicle to fail an emissions test?

- The code alone may not cause your vehicle to fail an emissions test, but it is still important to address the underlying issue to ensure proper functioning of the vehicle.

10. Can a simple software update fix OBDII code B3631 GMC on my GMC vehicle?

- In some cases, a software update from the manufacturer may address the code, especially if it is related to a known issue with the control module. Check with your dealer for more information.