AutoCodes – GMC – B3006 2017 GMC Sierra

B3006 2017 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 2017 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 189
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 2017 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 2017 GMC Sierra - Hood Ajar Switch Circuit - AutoCodes.com
B3006 2017 GMC Sierra Code - Hood Ajar Switch Circuit

What are the Possible Causes of the DTC B3006 2017 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 2017 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 2017 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 2017 GMC Sierra code?

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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 2017 GMC Sierra Code

1. What does OBDII code B3006 for a 2017 GMC Sierra mean?

The B3006 code indicates a problem with the Hood Ajar Switch Circuit in your GMC Sierra.

2. What are the common symptoms of a Hood Ajar Switch Circuit issue in a GMC Sierra?

Common symptoms include the hood warning light staying on, the hood not latching properly, and potentially triggering the alarm system.

3. What are the possible causes of OBDII code B3006 in a 2017 GMC Sierra?

Potential causes include a faulty hood ajar switch, wiring issues in the circuit, or a malfunction in the body control module.

4. How can I diagnose the Hood Ajar Switch Circuit problem in my GMC Sierra?

You can start by visually inspecting the hood ajar switch, checking the wiring for any damage, and using a multimeter to test the switch's continuity.

5. How can I repair the Hood Ajar Switch Circuit issue in my 2017 GMC Sierra?

Repair options may include replacing the hood ajar switch, repairing any damaged wiring, or resetting the body control module.

6. Can a faulty Hood Ajar Switch Circuit affect the vehicle's performance?

While the B3006 code itself may not directly impact performance, a malfunctioning hood ajar switch could potentially lead to safety issues or trigger the alarm system unnecessarily.

7. Is it safe to continue driving with the B3006 code present in my GMC Sierra?

It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent any potential safety concerns or further damage.

8. Can I reset the B3006 code in my GMC Sierra without fixing the underlying issue?

Resetting the code may temporarily turn off the warning light, but the issue will likely resurface until the root cause is addressed.

9. Will a hood ajar switch problem cause the hood to open unexpectedly while driving?

While it's rare, a malfunctioning hood ajar switch could potentially lead to the hood opening unexpectedly, posing a safety risk.

10. How much does it typically cost to repair a Hood Ajar Switch Circuit issue in a 2017 GMC Sierra?

The cost of repair can vary depending on the specific cause of the problem, but it may range from $100 to $300 for parts and labor.

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