AutoCodes – GMC – B3006 2015 GMC Sierra

B3006 2015 GMC Sierra Code - Hood Ajar Switch Circuit

Quick Answer

The Body Control Module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. Common causes include Faulty Hood Ajar Switch / Hood Latch, Hood Ajar Switch harness is open or shorted, Hood Ajar Switch 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
B3006 2015 GMC Sierra indicates Hood Ajar Switch Circuit.
Common causes
Common causes include Faulty Hood Ajar Switch / Hood Latch, Hood Ajar Switch harness is open or shorted, Hood Ajar Switch 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 235
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 02, 2023
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Code B3006 2015 GMC Sierra Description

The Body Control Module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. When the hood is closed, the switch is open, and the voltage remains high. When the hood is open, the switch is closed, and the voltage is pulled low. The Diagnostic Trouble Code (DTC) will be set when the BCM detects that there is a problem with the hood ajar switch signal circuit.
OBDII Code B3006 2015 GMC Sierra - Hood Ajar Switch Circuit - AutoCodes.com
B3006 2015 GMC Sierra Code - Hood Ajar Switch Circuit

What are the Possible Causes of the DTC B3006 2015 GMC Sierra?

  • Faulty Hood Ajar Switch / Hood Latch
  • Hood Ajar Switch harness is open or shorted
  • Hood Ajar Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3006 2015 GMC Sierra?

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 B3006 2015 GMC Sierra 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 B3006 2015 GMC Sierra code?

Need more information on how to fix the B3006 2015 GMC Sierra code? Get Access to Factory Service Manuals

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 B3006 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B3006 in a 2015 GMC Sierra related to the Hood Ajar Switch Circuit?

- The common symptoms include the hood warning light staying illuminated on the dashboard, the hood warning message appearing on the driver information center, and potential issues with the remote start system.

2. What does the OBDII code B3006 on a 2015 GMC Sierra indicate about the Hood Ajar Switch Circuit?

- This code indicates a malfunction in the hood ajar switch circuit, which is responsible for detecting whether the hood is properly closed or not.

3. What are the possible causes of OBDII code B3006 in a 2015 GMC Sierra?

- The possible causes include a faulty hood ajar switch, damaged wiring or connectors in the hood ajar switch circuit, or a software issue related to the hood ajar system.

4. How can I diagnose the OBDII code B3006 in my 2015 GMC Sierra?

- You can diagnose this code by visually inspecting the hood ajar switch and its wiring, checking for any loose connections, using a multimeter to test the switch's functionality, and scanning the vehicle's computer for related error codes.

5. Is it safe to drive my 2015 GMC Sierra with the OBDII code B3006 related to the Hood Ajar Switch Circuit?

- It is generally safe to drive the vehicle with this code, but it is important to ensure that the hood is securely closed to prevent any potential safety hazards or issues with the vehicle's operation.

6. Can I repair the OBDII code B3006 in my 2015 GMC Sierra myself?

- Depending on your experience and comfort level with automotive repairs, you may be able to repair this code yourself by replacing the hood ajar switch or repairing any damaged wiring. However, professional assistance may be recommended for complex issues.

7. Are there any temporary solutions to clear the OBDII code B3006 in my 2015 GMC Sierra?

- Clearing the code temporarily may be possible by disconnecting the vehicle's battery for a few minutes or using an OBDII scanner to reset the error code. However, it is important to address the root cause of the issue for a permanent solution.

8. Will the OBDII code B3006 in my 2015 GMC Sierra cause any long-term damage if left unresolved?

- While the code itself may not cause immediate damage, ignoring the underlying issue with the hood ajar switch circuit can lead to potential safety concerns, malfunctions in related systems, or further damage to the vehicle over time.

9. How much does it typically cost to repair the OBDII code B3006 in a 2015 GMC Sierra at a dealership or repair shop?

- The cost of repair can vary depending on the specific diagnosis, parts needed, labor rates, and location. On average, repairing the Hood Ajar Switch Circuit issue may cost between $100 to $300 at a dealership or repair shop.

10. Can the OBDII code B3006 in a 2015 GMC Sierra be related to a false trigger or intermittent issue with the hood ajar switch?

- Yes, it is possible for this code to be triggered by a false signal or intermittent problem with the hood ajar switch or its circuit. In such cases, thorough diagnosis and testing are necessary to identify the root cause accurately.

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