AutoCodesGMC – B2500 2017 GMC Sierra

B2500 2017 GMC Sierra Code - Driver Exterior Unlock Switch Circuit

Quick Answer

The Body Control Module (BCM) monitors the voltage level of the key switch unlock signal circuit. Common causes include Faulty Door Latch Assembly-Driver, Door Latch Assembly-Driver harness is open or shorted, Door Latch Assembly-Driver 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
B2500 2017 GMC Sierra indicates Driver Exterior Unlock Switch Circuit.
Common causes
Common causes include Faulty Door Latch Assembly-Driver, Door Latch Assembly-Driver harness is open or shorted, Door Latch Assembly-Driver 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 226
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 24, 2023
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Code B2500 2017 GMC Sierra Description

The Body Control Module (BCM) monitors the voltage level of the key switch unlock signal circuit. When the key is inserted into the driver door key cylinder and turned to the Unlock position, a switch within the driver door latch closes causing the voltage to drop within the key switch unlock signal circuit. The Body Control Module will detect the drop in voltage and will command the doors to unlock. The Diagnostic Trouble Code (DTC) will be set when the Body Control Module detects a short to ground on the driver door key switch signal circuit.
OBDII Code B2500 2017 GMC Sierra - Driver Exterior Unlock Switch Circuit - AutoCodes.com
B2500 2017 GMC Sierra Code - Driver Exterior Unlock Switch Circuit

What are the Possible Causes of the DTC B2500 2017 GMC Sierra?

  • Faulty Door Latch Assembly-Driver
  • Door Latch Assembly-Driver harness is open or shorted
  • Door Latch Assembly-Driver circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B2500 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2500 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 B2500 2017 GMC Sierra 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 B2500 2017 GMC Sierra Code

1. What are common symptoms of the OBDII code B2500 in a 2017 GMC Sierra related to the Driver Exterior Unlock Switch Circuit?

- Common symptoms include the inability to unlock the driver's door using the exterior switch, intermittent issues with door unlocking, or the switch not responding at all.

2. What are possible causes of the B2500 code in a 2017 GMC Sierra?

- Possible causes may include a faulty driver exterior unlock switch, wiring issues in the circuit, a blown fuse, or a malfunctioning body control module.

3. How can I diagnose the cause of the B2500 code in my 2017 GMC Sierra?

- To diagnose the issue, you can start by checking the fuse related to the driver exterior unlock switch, inspecting the wiring for any damage or loose connections, and testing the switch for proper functionality.

4. Can I repair the B2500 code in my 2017 GMC Sierra on my own?

- Depending on your skill level and experience, you may be able to repair the issue on your own by replacing the faulty switch, repairing any damaged wiring, or addressing the underlying cause. However, professional help may be needed for complex repairs.

5. Is it safe to continue driving my 2017 GMC Sierra with the B2500 code present?

- While the vehicle may still be operable with the B2500 code, it is recommended to address the issue promptly to ensure proper functioning of the driver exterior unlock switch and overall vehicle safety and security.

6. How much does it typically cost to repair the B2500 code in a 2017 GMC Sierra?

- The cost of repairing the B2500 code can vary depending on the specific cause of the issue, labor rates in your area, and whether genuine parts are used. It is advisable to obtain quotes from different repair shops for an accurate estimate.

7. Can a faulty driver exterior unlock switch cause other related issues in a 2017 GMC Sierra?

- Yes, a faulty driver exterior unlock switch can potentially cause related issues such as difficulty unlocking the driver's door from the outside, problems with the remote keyless entry system, or issues with the vehicle's security system.

8. Will resetting the OBDII code B2500 in my 2017 GMC Sierra resolve the issue temporarily?

- Resetting the code may temporarily clear the error code, but if the underlying issue causing the B2500 code is not addressed, the problem is likely to reoccur. It is important to diagnose and repair the root cause of the code for a lasting solution.

9. Are there any preventive measures I can take to avoid encountering the B2500 code in my 2017 GMC Sierra?

- Regularly inspecting and maintaining the driver exterior unlock switch, checking the wiring for any signs of wear or damage, and ensuring the proper functioning of the door locking system can help prevent the occurrence of the B2500 code.

10. Can a malfunctioning body control module be a common reason for the B2500 code in a 2017 GMC Sierra?

- Yes, a malfunctioning body control module can be a possible cause of the B2500 code as it plays a crucial role in controlling various vehicle functions, including the driver exterior unlock switch circuit.

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