AutoCodes – GMC – B0687 GMC

B0687 GMC Code - Security System Indicator Circuit Low

Quick Answer

The security indicator is controlled by the Body Control Module (BCM) based on commands from the immobilizer system or the Content Theft Deterrent (CTD) system. Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster (IPC) harness is open or shorted, Instrument Panel Cluster (IPC) circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0687 GMC indicates Security System Indicator Circuit Low.
Common causes: Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster (IPC) harness is open or shorted, Instrument Panel Cluster (IPC) circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 1,093

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0687 GMC Description

The security indicator is controlled by the Body Control Module (BCM) based on commands from the immobilizer system or the Content Theft Deterrent (CTD) system. With the ignition OFF, the security indicator is commanded by the CTD system. With the ignition ON, the security indicator is commanded by the immobilizer system. The security indicator is located in the Instrument Panel Cluster (IPC) and is supplied B+ at all times. When the immobilizer or CTD system requests the indicator be commanded ON, the BCM grounds the security indicator control circuit, illuminating the indicator.

OBDII Code B0687 GMC - Security System Indicator Circuit Low - AutoCodes.com — B0687 GMC Code - Security System Indicator Circuit Low

What does this mean?

What are the Possible Causes of the DTC B0687 GMC?

Faulty Instrument Panel Cluster (IPC)
Instrument Panel Cluster (IPC) harness is open or shorted
Instrument Panel Cluster (IPC) circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B0687 GMC?

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 B0687 GMC 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 B0687 GMC 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 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.