AutoCodes – GMC – B0087 2018 GMC Sierra

B0087 2018 GMC Sierra 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 2018 GMC Sierra 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 251

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 2018 GMC Sierra 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 2018 GMC Sierra - Left Rear Side Impact Sensor - AutoCodes.com — B0087 2018 GMC Sierra Code - Left Rear Side Impact Sensor

What does this mean?

What are the Possible Causes of the DTC B0087 2018 GMC Sierra?

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 2018 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 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 2018 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 B0087 2018 GMC Sierra code?

Need more information on how to fix the B0087 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0087 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 2018 GMC Sierra Code

1. What does OBDII code B0087 for a 2018 GMC Sierra indicate?

The B0087 code specifically relates to the Left Rear Side Impact Sensor on a 2018 GMC Sierra.

2. What are common symptoms of a faulty Left Rear Side Impact Sensor in a 2018 GMC Sierra?

Common symptoms of a faulty sensor can include airbag warning lights illuminating on the dashboard and potential issues with the airbag system deployment.

3. What are possible causes of the B0087 OBDII code in a 2018 GMC Sierra?

Causes of the B0087 code can include a malfunctioning Left Rear Side Impact Sensor, wiring issues, or a problem with the sensor's connection.

4. How can I diagnose the source of the B0087 code in my 2018 GMC Sierra?

Diagnosing the B0087 code typically involves using a diagnostic scanner to read the code, checking the sensor and its wiring for damage, and inspecting the sensor's connections for any loose or corroded contacts.

5. Is it safe to drive my 2018 GMC Sierra with the B0087 code present?

It is not recommended to drive the vehicle with the B0087 code active, as it may affect the proper functioning of the airbag system in the event of a side impact collision.

6. Can I repair the Left Rear Side Impact Sensor in my 2018 GMC Sierra myself?

While some basic troubleshooting steps can be taken, repairing or replacing the sensor may require specialized tools and expertise, so it is advisable to consult a professional mechanic.

7. How much does it typically cost to repair a faulty Left Rear Side Impact Sensor in a 2018 GMC Sierra?

The cost of repairing or replacing the sensor can vary depending on the extent of the damage and whether any additional components need to be addressed. It is best to obtain a quote from a trusted automotive service provider.

8. Will resetting the OBDII code B0087 in my 2018 GMC Sierra make the issue go away?

Simply resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem with the Left Rear Side Impact Sensor. It is important to address the root cause of the issue.

9. Can extreme weather conditions affect the Left Rear Side Impact Sensor in a 2018 GMC Sierra?

Extreme temperature fluctuations or exposure to moisture can potentially impact the sensor's performance over time, so it's important to keep the sensor and its connections protected.

10. How often should the Left Rear Side Impact Sensor in a 2018 GMC Sierra be inspected for potential issues?

Regular maintenance checks, such as during routine service appointments, can help catch any potential issues with the sensor early on and ensure the airbag system functions properly in case of an accident.