Engine-CodesGMC – B0084 2017 GMC Sierra

B0084 2017 GMC Sierra Code - Right Front Impact Sensor

Quick Answer

The B0084 diagnostic trouble code (DTC) on a 2017 GMC Sierra indicates a problem with the right front impact sensor. Common causes include Faulty impact sensor, Wiring issues or damage to the sensor's wiring harness, Corrosion or damage to the sensor due to environmental factors. 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
B0084 2017 GMC Sierra indicates Right Front Impact Sensor.
Common causes
Common causes include Faulty impact sensor, Wiring issues or damage to the sensor's wiring harness, Corrosion or damage to the sensor due to environmental factors.
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 16, 2024
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Code B0084 2017 GMC Sierra Description

The B0084 diagnostic trouble code (DTC) on a 2017 GMC Sierra indicates a problem with the right front impact sensor. This sensor is a crucial component of the vehicle's safety system, as it is responsible for detecting impacts or collisions on the front right side of the vehicle. When this sensor malfunctions or fails, it can compromise the accuracy of the airbag deployment system and other safety features.

OBDII Code B0084 2017 GMC Sierra - Right Front Impact Sensor
B0084 2017 GMC Sierra Code - Right Front Impact Sensor

Common Causes of B0084 2017 GMC Sierra

  1. Faulty impact sensor
  2. Wiring issues or damage to the sensor's wiring harness
  3. Corrosion or damage to the sensor due to environmental factors
  4. Impact sensor out of calibration
  5. Software issues in the airbag control module

Symptoms of B0084 2017 GMC Sierra

  1. Airbag warning light illuminated on the dashboard
  2. Airbags may not deploy in the event of a collision
  3. Inaccurate or inconsistent airbag deployment
  4. Vehicle may fail safety inspections

How to Fix B0084 2017 GMC Sierra

  1. Diagnose the issue using a scan tool to confirm the B0084 code and pinpoint the exact cause of the problem.
  2. Inspect the wiring harness and connections for any damage or corrosion. Repair or replace as necessary.
  3. Test the impact sensor for proper functionality and calibration. Replace the sensor if it is faulty.
  4. Clear the DTC and reset the airbag system to ensure proper operation.
  5. Perform a test drive to verify that the issue has been resolved and that the airbag system is functioning correctly.

Cost to Fix B0084 2017 GMC Sierra

The cost of repairing a right front impact sensor on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair cost for this type of issue can range from $200 to $500, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also affect the overall repair cost. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances.

Tech Notes for B0084 2017 GMC Sierra

B0084:02 Right Front Impact Sensor Short to Ground

B0084:05 Right Front Impact Sensor Short to Battery or Open

B0084:08 Right Front Impact Sensor Signal Invalid

B0084:0F Right Front Impact Sensor Erratic

B0084:39 Right Front Impact Sensor Internal Electronic Failure

B0084:3A Right Front Impact Sensor Incorrect Component Installed

B0084:71 Right Front Impact Sensor Invalid Serial Data Received

Need more information about the B0084 2017 GMC Sierra code?

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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 B0084 2017 GMC Sierra Code

1. What does the OBDII code B0084 indicate on a 2017 GMC Sierra?

The code B0084 indicates a fault in the Right Front Impact Sensor circuit, suggesting an issue with the sensor or its wiring.

2. What are common symptoms of code B0084 in a 2017 GMC Sierra?

Common symptoms include the airbag warning light illuminating on the dashboard and potentially the airbags not deploying correctly in the event of an accident.

3. What can cause the B0084 code to appear on a 2017 GMC Sierra?

Causes may include damaged wiring, a faulty right front impact sensor, or problems with the airbag control module.

4. How is the B0084 code diagnosed in a 2017 GMC Sierra?

Diagnosis involves using a scan tool to read the fault code and examining the right front impact sensor and its connections for damage or loose wiring.

5. What steps are involved in repairing code B0084 on a 2017 GMC Sierra?

Repair steps typically include checking and repairing any damaged wiring, replacing the faulty right front impact sensor, and resetting the airbag system to clear the fault code.

6. Is it safe to drive a 2017 GMC Sierra with the B0084 code?

While the vehicle can be driven, safety is compromised because the airbag system may not function correctly in an accident. It is advisable to address the issue promptly.

7. How much does it typically cost to fix the B0084 code in a 2017 GMC Sierra?

Costs can vary widely but generally include the price of the sensor (if replacement is needed) and labor, which can range from $150 to $300 depending on the garage’s hourly rate.

8. Can a faulty right front impact sensor affect other systems in my 2017 GMC Sierra?

While the primary impact is on the airbag system, a fault in this sensor should not affect other vehicle systems. However, the overall safety in a collision is compromised.

9. What tools are needed to diagnose the B0084 code on a 2017 GMC Sierra?

A professional-grade scan tool is required to accurately diagnose the B0084 code, along with basic hand tools for inspecting and possibly replacing the sensor.

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