AutoCodes – GMC – B0087 GMC

B0087 GMC Code - Left Rear Side Impact Sensor

Quick Answer

The impact sensors are equipped on vehicles to supplement the supplemental inflatable restraint (SIR) system performance. Common causes include Faulty Left Rear Side Impact Sensor, Left Rear Side Impact Sensor harness is open or shorted, Left Rear Side Impact Sensor 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: B0087 GMC indicates Left Rear Side Impact Sensor.
Common causes: Common causes include Faulty Left Rear Side Impact Sensor, Left Rear Side Impact Sensor harness is open or shorted, Left Rear Side Impact Sensor 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 8,199

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 24, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0087 GMC Description

The impact sensors are equipped on vehicles to supplement the supplemental inflatable restraint (SIR) system performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the Inflatable Restraint Sensing and Diagnostic Module (SDM). The impact sensors can assist in determining the severity of some frontal and side collisions. The Inflatable Restraint Sensing and Diagnostic Module use the input from the impact sensors to assist in determining the severity of a collision, further supporting air bag deployment. If the Inflatable Restraint Sensing and Diagnostic Module determines a deployment is warranted, the Inflatable Restraint Sensing and Diagnostic Module will cause current to flow through the deployment loops deploying the air bags.

OBDII Code B0087 GMC - Left Rear Side Impact Sensor - AutoCodes.com — B0087 GMC Code - Left Rear Side Impact Sensor

What does this mean?

What are the Possible Causes of the DTC B0087 GMC?

Faulty Left Rear Side Impact Sensor
Left Rear Side Impact Sensor harness is open or shorted
Left Rear Side Impact Sensor circuit poor electrical connection
Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0087 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 does this mean?

Code Tech Notes

B0087:02 Left Rear Side Impact Sensor Short to Ground
B0087:05 Left Rear Side Impact Sensor High Voltage/Open
B0087:39 Left Rear Side Impact Sensor Internal Malfunction
B0087:3A Left Rear Side Impact Sensor Incorrect Component Installed
B0087:71 Left Rear Side Impact Sensor Invalid Data

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0087 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 B0087 GMC code?

Need more information on how to fix the B0087 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0087 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B0087 2014 GMC Sierra — Left Rear Side Impact Sensor
B0087 2015 GMC Sierra — Left Rear Side Impact Sensor
B0087 2016 GMC Sierra — Left Rear Side Impact Sensor
B0087 2017 GMC Sierra — Left Rear Side Impact Sensor
B0087 2018 GMC Sierra — Left Rear Side Impact Sensor

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B0087 GMC Code

1. What are the common symptoms of OBDII code B0087 GMC?

The common symptoms of OBDII code B0087 GMC (Left Rear Side Impact Sensor) include the airbag warning light illuminated on the dashboard and potential issues with the airbag system.

2. What causes OBDII code B0087 GMC to trigger?

OBDII code B0087 GMC is triggered when the left rear side impact sensor detects an issue with its circuit or operation, indicating a potential problem with the impact sensor itself or the wiring connected to it.

3. How can I diagnose the issue related to OBDII code B0087 GMC?

Diagnosing OBDII code B0087 GMC involves using a scan tool to retrieve the specific fault code, inspecting the left rear side impact sensor and its wiring for any damage, and checking for loose connections or corrosion.

4. Can OBDII code B0087 GMC be repaired at home?

Simple repairs related to OBDII code B0087 GMC, such as checking and securing the wiring connections or replacing the left rear side impact sensor, can be done at home if you have the necessary tools and knowledge. However, more complex issues may require professional assistance.

5. Is it safe to drive with OBDII code B0087 GMC active?

It is not recommended to drive with OBDII code B0087 GMC active, as it indicates a potential problem with the airbag system, which may affect its proper deployment in the event of a collision.

6. How much does it cost to repair OBDII code B0087 GMC?

The cost of repairing OBDII code B0087 GMC can vary depending on the underlying issue, the need for replacement parts, and whether you choose to do the repair yourself or seek professional help. Costs may range from a few dollars for simple fixes to a few hundred dollars for more complex repairs.

7. Can OBDII code B0087 GMC affect the overall safety of the vehicle?

Yes, OBDII code B0087 GMC can affect the overall safety of the vehicle, as it indicates a potential malfunction in the airbag system, which is designed to protect occupants in the event of a crash. It is important to address this issue promptly to ensure the airbags function correctly.

8. Are there any recalls related to OBDII code B0087 GMC?

Recalls related to OBDII code B0087 GMC may vary depending on the specific model and year of the vehicle. It is recommended to check with the manufacturer or a dealership to see if there are any recalls related to this issue for your vehicle.

9. How long does it typically take to repair OBDII code B0087 GMC?

The time it takes to repair OBDII code B0087 GMC can vary depending on the complexity of the issue, the availability of replacement parts, and whether you are doing the repair yourself or taking your vehicle to a professional. Simple repairs may take a few hours, while more involved repairs may take longer.

10. Can resetting the OBDII code B0087 GMC clear the issue permanently?

Resetting the OBDII code B0087 GMC may temporarily clear the issue, but if the underlying problem with the left rear side impact sensor or its wiring is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the issue to prevent it from recurring.