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B1380 2017 GMC Sierra Code - Control Module Ignition Accessory Circuit

Quick Answer

The B1380 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Control Module Ignition Accessory Circuit. Common causes include Damaged wiring or connectors in the ignition accessory circuit, Faulty ignition switch, 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
B1380 2017 GMC Sierra indicates Control Module Ignition Accessory Circuit.
Common causes
Common causes include Damaged wiring or connectors in the ignition accessory circuit, Faulty ignition switch, 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B1380 2017 GMC Sierra Description

The B1380 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Control Module Ignition Accessory Circuit. This code indicates that there is a malfunction in the circuit that controls the ignition accessory functions of the vehicle. The ignition accessory circuit is responsible for powering components such as the radio, power windows, and interior lights when the ignition key is in the accessory position. When this circuit is compromised, it can lead to various issues with the vehicle's electrical system and overall performance.

OBDII Code B1380 2017 GMC Sierra - Control Module Ignition Accessory Circuit
B1380 2017 GMC Sierra Code - Control Module Ignition Accessory Circuit

Common Causes of B1380 2017 GMC Sierra

  1. Damaged wiring or connectors in the ignition accessory circuit
  2. Faulty ignition switch
  3. Malfunctioning control module
  4. Blown fuse
  5. Electrical short circuit

Symptoms of B1380 2017 GMC Sierra

  1. Inoperative radio or other accessories
  2. Power windows not working
  3. Interior lights not functioning
  4. Vehicle not starting
  5. Battery draining quickly

How to Fix B1380 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the ignition accessory circuit, checking for any visible damage to wiring or connectors.
  2. Test the ignition switch and control module for proper functionality using a multimeter or diagnostic tool.
  3. Replace any damaged wiring, connectors, or components as needed.
  4. Reset the control module and clear the DTC from the vehicle's computer.
  5. Test the affected accessories to ensure they are operating correctly after the repair.

Cost to Fix B1380 2017 GMC Sierra

The typical repair costs for addressing a B1380 code can vary depending on the specific cause of the issue and the extent of the damage. In general, the cost of parts and labor for this repair can range from $150 to $500. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable pricing.

What does this mean?

Tech Notes for B1380 2017 GMC Sierra

B1380:01 Control Module Ignition Accessory Circuit Short to Battery

B1380:04 Control Module Ignition Accessory Circuit Short to Ground or Open









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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 B1380 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code B1380 in a 2017 GMC Sierra?

The common symptoms of OBDII code B1380 in a 2017 GMC Sierra include issues with the ignition accessory circuit, such as the failure of certain electrical components to function properly.

2. What could be the possible causes of OBDII code B1380 in a 2017 GMC Sierra?

Possible causes of OBDII code B1380 in a 2017 GMC Sierra may include a faulty ignition switch, damaged wiring or connectors in the ignition accessory circuit, or a malfunctioning control module.

3. How do I diagnose OBDII code B1380 in my 2017 GMC Sierra?

Diagnosing OBDII code B1380 in a 2017 GMC Sierra typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the ignition accessory circuit for any visible damage, and testing the relevant components for proper functionality.

4. Can I still drive my 2017 GMC Sierra with OBDII code B1380 present?

It is not recommended to drive your 2017 GMC Sierra with OBDII code B1380 present, as it could lead to further electrical issues and potential safety hazards. It is best to address the problem promptly.

5. How can I repair OBDII code B1380 in my 2017 GMC Sierra?

Repairing OBDII code B1380 in a 2017 GMC Sierra may involve replacing a faulty ignition switch, repairing damaged wiring or connectors, or reprogramming the control module. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Is it safe to reset the OBDII code B1380 in my 2017 GMC Sierra using a diagnostic scanner?

While resetting the OBDII code B1380 using a diagnostic scanner may temporarily clear the code, it is important to address the underlying issue causing the fault code to prevent it from reoccurring.

7. How much does it cost to repair OBDII code B1380 in a 2017 GMC Sierra?

The cost to repair OBDII code B1380 in a 2017 GMC Sierra can vary depending on the specific cause of the issue, parts needed for repair, and labor rates. It is advisable to obtain quotes from different repair shops for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code B1380 in a 2017 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code B1380 in a 2017 GMC Sierra, it is recommended to seek professional help for accurate diagnosis and repair to ensure the problem is properly addressed.

9. Will OBDII code B1380 cause my 2017 GMC Sierra to fail an emissions test?

OBDII code B1380 may not directly cause your 2017 GMC Sierra to fail an emissions test, but it indicates an issue with the ignition accessory circuit that should be fixed to ensure proper vehicle functionality and emissions compliance.

10. How can I prevent OBDII code B1380 from appearing in my 2017 GMC Sierra in the future?

To prevent OBDII code B1380 from appearing in your 2017 GMC Sierra in the future, it is essential to perform regular maintenance checks, address any electrical issues promptly, and follow the manufacturer's recommended service schedule.

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