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B3667 Chevrolet Code - Tonneau Release Circuit

Quick Answer

The B3667 diagnostic trouble code (DTC) for Chevrolet vehicles relates to the tonneau release circuit. Common causes include Faulty tonneau release switch, Damaged wiring or connectors in the tonneau release circuit, Malfunctioning tonneau release relay. 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
B3667 Chevrolet indicates Tonneau Release Circuit.
Common causes
Common causes include Faulty tonneau release switch, Damaged wiring or connectors in the tonneau release circuit, Malfunctioning tonneau release relay.
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 Sep 12, 2024
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Code B3667 Chevrolet Description

The B3667 diagnostic trouble code (DTC) for Chevrolet vehicles relates to the tonneau release circuit. The tonneau release circuit is responsible for controlling the operation of the tonneau cover on pickup trucks. When this code is triggered, it indicates that there is a malfunction or fault in the circuit that controls the release mechanism of the tonneau cover. This can lead to issues with opening or closing the tonneau cover, affecting the convenience and functionality of the vehicle.

OBDII Code B3667 Chevrolet - Tonneau Release Circuit
B3667 Chevrolet Code - Tonneau Release Circuit

Common Causes of B3667 Chevrolet

  1. Faulty tonneau release switch.
  2. Damaged wiring or connectors in the tonneau release circuit.
  3. Malfunctioning tonneau release relay.
  4. Defective tonneau cover actuator.
  5. Corrosion or moisture damage in the tonneau release circuit components.

Symptoms of B3667 Chevrolet

  1. Inability to open or close the tonneau cover electronically.
  2. Unresponsive tonneau cover release button on the key fob or interior switch.
  3. Tonneau cover opening or closing intermittently or erratically.
  4. Dashboard warning light indicating an issue with the tonneau release circuit.

How to Fix B3667 Chevrolet

  1. Begin by conducting a visual inspection of the tonneau release circuit components, checking for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the wiring and connectors in the circuit to identify any open or short circuits.
  3. Test the tonneau release switch, relay, and actuator for proper functionality and replace any components that are found to be faulty.
  4. Clear the DTC from the vehicle's computer memory using a diagnostic scanner after the repair is completed.
  5. Test the tonneau cover to ensure that it opens and closes smoothly and that the tonneau release circuit is functioning correctly.

Cost to Fix B3667 Chevrolet

The cost of repairing the tonneau release circuit can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this code may range from $150 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It's advisable to contact local auto repair shops for a more accurate estimate based on your specific circumstances.

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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 B3667 Chevrolet Code

1. What are the common symptoms of OBDII code B3667 (Chevrolet) related to the Tonneau Release Circuit?

- Common symptoms include the tonneau cover failing to open or close properly, dashboard warning lights illuminating, and issues with the remote key fob operation.

2. What could be causing OBDII code B3667 (Chevrolet) to trigger in the Tonneau Release Circuit?

- The code may be triggered by a faulty tonneau release switch, damaged wiring or connectors, a malfunctioning tonneau motor, or a problem with the control module.

3. How can I diagnose the Tonneau Release Circuit issue causing OBDII code B3667 (Chevrolet)?

- To diagnose the issue, you can perform a visual inspection of the wiring and connectors, test the tonneau release switch for proper functionality, and use a scan tool to check for any stored fault codes.

4. Are there any simple repair tips for addressing OBDII code B3667 (Chevrolet) in the Tonneau Release Circuit?

- Try checking and cleaning the connectors and wiring related to the tonneau release circuit first. Sometimes, a simple cleaning or repair of a loose connection can resolve the issue.

5. Can a DIY enthusiast fix OBDII code B3667 (Chevrolet) related to the Tonneau Release Circuit?

- Depending on your skill level and access to tools, you may be able to address simple issues like cleaning connectors or replacing a faulty tonneau release switch. However, more complex problems may require professional assistance.

6. Is it safe to drive with OBDII code B3667 (Chevrolet) triggered in the Tonneau Release Circuit?

- It is generally safe to drive with this code, but you may experience inconvenience due to the tonneau cover not functioning correctly. Addressing the issue promptly is recommended to avoid further complications.

7. What are the potential consequences of ignoring OBDII code B3667 (Chevrolet) in the Tonneau Release Circuit?

- Ignoring the code could lead to continued issues with the tonneau cover operation, potential draining of the vehicle's battery if the tonneau motor is continuously trying to operate, and possible damage to other related components.

8. How much does it typically cost to repair OBDII code B3667 (Chevrolet) associated with the Tonneau Release Circuit?

- Repair costs can vary depending on the specific cause of the issue. Simple fixes like replacing a switch may cost less, while addressing wiring or control module problems can be more expensive. It's best to consult a professional for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code B3667 (Chevrolet) in the Tonneau Release Circuit?

- Regularly inspecting the tonneau release system, keeping connectors clean and secure, and addressing any issues promptly can help prevent this code from occurring.

10. Can extreme weather conditions affect the triggering of OBDII code B3667 (Chevrolet) related to the Tonneau Release Circuit?

- Yes, extreme temperatures or moisture exposure can potentially impact the tonneau release system components, leading to malfunctions that trigger the OBDII code. It's important to keep the system well-maintained in all weather conditions.

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