Engine-CodesGMC – B3622 2018 GMC Sierra

B3622 2018 GMC Sierra Code - Steering Wheel Controls Signal Circuit

Quick Answer

The B3622 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the steering wheel controls signal circuit. Common causes include Damaged wiring harness, Faulty connectors, Malfunctioning control module. 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
B3622 2018 GMC Sierra indicates Steering Wheel Controls Signal Circuit.
Common causes
Common causes include Damaged wiring harness, Faulty connectors, Malfunctioning control module.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B3622 2018 GMC Sierra Description

The B3622 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the steering wheel controls signal circuit. This code indicates that there is a malfunction or issue with the signal circuit that controls the steering wheel buttons, such as those for audio, cruise control, and phone functions. The steering wheel controls are crucial for the driver to operate various functions without taking their hands off the steering wheel, ensuring safety and convenience.

OBDII Code B3622 2018 GMC Sierra - Steering Wheel Controls Signal Circuit
B3622 2018 GMC Sierra Code - Steering Wheel Controls Signal Circuit

Common Causes of B3622 2018 GMC Sierra

  1. Damaged wiring harness
  2. Faulty connectors
  3. Malfunctioning control module
  4. Electrical short circuit
  5. Water damage or corrosion in the signal circuit

Symptoms of B3622 2018 GMC Sierra

  1. Non-responsive steering wheel controls
  2. Inconsistent functionality of steering wheel buttons
  3. Error messages on the instrument cluster related to steering wheel controls
  4. Loss of control over audio, phone, or cruise control functions on the steering wheel

How to Fix B3622 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the wiring harness and connectors to identify any visible damage or corrosion.
  2. Use a multimeter to test the continuity and voltage of the signal circuit components to pinpoint the exact location of the issue.
  3. Replace any damaged wiring or connectors and ensure proper connections are made.
  4. If the control module is found to be faulty, it may need to be replaced or reprogrammed to resolve the issue.
  5. Clear the DTC from the vehicle's computer memory using a diagnostic scanner to ensure the issue has been resolved.

Cost to Fix B3622 2018 GMC Sierra

The typical repair costs for addressing the B3622 code on a 2018 GMC Sierra can range from $150 to $500, depending on the extent of the damage and the parts that need to be replaced. This estimate includes both parts and labor costs. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on various factors. It is advisable to check with local repair shops for a more accurate estimate based on your specific location and vehicle details.

Tech Notes for B3622 2018 GMC Sierra

B3622 39 Steering Wheel Controls Internal Malfunction

B3622 59 Steering Wheel Controls Signal Circuit Protection Time-Out

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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 B3622 2018 GMC Sierra Code

1. What does OBDII code B3622 for a 2018 GMC Sierra indicate?

The B3622 code specifically relates to a fault in the steering wheel controls signal circuit of the vehicle.

2. What are the common symptoms of OBDII code B3622 in a 2018 GMC Sierra?

Common symptoms include non-responsive steering wheel controls, malfunctioning buttons, or the inability to operate certain functions from the steering wheel.

3. What are some potential causes of the B3622 code in a 2018 GMC Sierra?

Possible causes may include damaged wiring in the steering wheel controls circuit, a faulty control module, or a malfunctioning steering wheel controls switch.

4. How can I diagnose the issue related to OBDII code B3622 in my 2018 GMC Sierra?

Diagnosing the problem may involve conducting a visual inspection of the wiring, testing the steering wheel controls switch, and using a diagnostic scanner to read the specific error codes in the system.

5. Can I still drive my 2018 GMC Sierra with the B3622 code present?

While it may be possible to drive the vehicle with the code active, it is recommended to address the issue promptly to avoid any potential safety concerns or further damage to the steering wheel controls system.

6. How can I repair the steering wheel controls signal circuit issue indicated by code B3622 in my 2018 GMC Sierra?

Repairing the issue may involve repairing or replacing damaged wiring, replacing the faulty control module, or installing a new steering wheel controls switch, depending on the specific cause of the problem.

7. Is it possible to reset the B3622 code in a 2018 GMC Sierra without fixing the underlying issue?

While you can clear the code temporarily, it is essential to address the root cause of the problem to prevent the code from reoccurring.

8. Are there any DIY tips for troubleshooting the B3622 code in my 2018 GMC Sierra?

You can start by checking the fuse related to the steering wheel controls, inspecting the wiring for any visible damage, and ensuring all connections are secure before seeking professional assistance if needed.

9. Can extreme temperatures or environmental conditions trigger the B3622 code in a 2018 GMC Sierra?

Yes, extreme temperatures or moisture exposure can sometimes lead to electrical issues, including faults in the steering wheel controls signal circuit triggering the B3622 code.

10. How long does it typically take to repair the steering wheel controls signal circuit issue causing the B3622 code in a 2018 GMC Sierra?

The repair duration can vary depending on the specific cause of the problem and the extent of the damage, ranging from a simple fix that can be completed quickly to a more complex repair that may take longer to resolve.

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