Engine-CodesGMC – B0687 GMC

B0687 GMC Code - Security System Indicator Circuit Low

Quick Answer

The B0687 GMC code indicates a problem with the Security System Indicator Circuit being low. Common causes include Faulty security system indicator, Damaged wiring or connectors in the security system indicator circuit, Malfunctioning security system 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
B0687 GMC indicates Security System Indicator Circuit Low.
Common causes
Common causes include Faulty security system indicator, Damaged wiring or connectors in the security system indicator circuit, Malfunctioning security system 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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B0687 GMC Description

The B0687 GMC code indicates a problem with the Security System Indicator Circuit being low. The security system in a vehicle is designed to prevent unauthorized access and theft. When this code is triggered, it means that the circuit responsible for the security system indicator is not functioning properly. This indicator is usually a light on the dashboard that signals the status of the security system. A low circuit can lead to issues with the security system not activating when needed, potentially leaving the vehicle vulnerable to theft.

OBDII Code B0687 GMC - Security System Indicator Circuit Low
B0687 GMC Code - Security System Indicator Circuit Low

Common Causes of B0687 GMC

  1. Faulty security system indicator.
  2. Damaged wiring or connectors in the security system indicator circuit.
  3. Malfunctioning security system control module.
  4. Corrosion in the circuit connections.
  5. Electrical issues in the vehicle's system.

Symptoms of B0687 GMC

  1. Security system indicator light not illuminating or staying on constantly.
  2. Security system not activating when locking the vehicle.
  3. Vehicle not starting due to security system malfunction.
  4. False alarms triggered by the security system.

How to Fix B0687 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the trouble codes.
  2. Inspect the security system indicator and its connections for any visible damage or corrosion.
  3. Test the wiring and connectors in the security system indicator circuit for continuity and repair or replace any damaged components.
  4. If the issue persists, check the security system control module for faults and replace if necessary.
  5. Clear the trouble codes, reset the system, and test the security system to ensure proper functionality.

Cost to Fix B0687 GMC

The typical repair costs for addressing a B0687 GMC code can vary depending on the specific cause of the issue. On average, the parts for this repair could range from $50 to $200, while the labor costs may range from $100 to $300. It is important to note that these are rough estimates, and actual costs can vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the extent of the repairs needed. It is recommended to consult with a professional mechanic to get an accurate cost estimate for this repair.

Need more information about the B0687 GMC code?

Need more information on how to fix the B0687 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0687 GMC code diagnosed by a professional: Find a repair shop in your area

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 B0687 GMC Code

1. What are common symptoms of OBDII code B0687 GMC (Security System Indicator Circuit Low)?

The common symptoms include the security system indicator light staying on or not functioning properly.

2. What can cause OBDII code B0687 GMC to trigger?

This code is typically triggered by a malfunction in the security system indicator circuit, such as a wiring issue or a faulty indicator light.

3. How serious is OBDII code B0687 GMC?

While this code may not affect the drivability of the vehicle, it is important to address it promptly to ensure the proper functioning of the security system.

4. How can I diagnose OBDII code B0687 GMC?

Diagnosing this code involves checking the wiring and connections related to the security system indicator circuit, as well as inspecting the indicator light itself for any issues.

5. Can I still drive my vehicle with OBDII code B0687 GMC present?

It is generally safe to drive the vehicle with this code, but it is recommended to have it inspected and repaired as soon as possible to prevent any potential security system issues.

6. How can I repair OBDII code B0687 GMC?

Repairing this code often involves fixing any wiring issues, replacing a faulty security system indicator light, or addressing any other component causing the circuit to register as low.

7. Can a DIYer fix OBDII code B0687 GMC?

DIYers with experience in automotive electrical systems may be able to diagnose and repair this code, but it is recommended to seek professional help if unsure.

8. Will OBDII code B0687 GMC cause my vehicle to fail an emissions test?

Since this code does not directly affect emissions, it should not cause the vehicle to fail an emissions test.

9. How much does it cost to repair OBDII code B0687 GMC?

The cost of repairing this code can vary depending on the underlying issue, but it may involve simple fixes like re-wiring or replacing a light bulb.

10. How long does it take to repair OBDII code B0687 GMC?

The repair time for this code can vary based on the complexity of the issue, but it is often a relatively quick fix once the root cause is identified.

Discuss the causes and fixes for B0687 GMC OBDII Code

Code B0687 GMC comments

No comments found for this page.