AutoCodes – GMC – C0186 2018 GMC Sierra

C0186 2018 GMC Sierra Code - Lateral Acceleration Sensor Signal

Quick Answer

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. Common causes include Faulty Lateral Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module), Lateral Acceleration Sensor harness is open or shorted, Lateral Acceleration 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
C0186 2018 GMC Sierra indicates Lateral Acceleration Sensor Signal.
Common causes
Common causes include Faulty Lateral Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module), Lateral Acceleration Sensor harness is open or shorted, Lateral Acceleration 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 137
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 28, 2023
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Code C0186 2018 GMC Sierra Description

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. The Multi-Axis Acceleration Sensor communicates via serial data with the Electronic Brake Control Module (EBCM). The Electronic Brake Control Module activates the stability control function depending on the Multi-Axis Acceleration Sensor input. The Inflatable Restraint Sensing and Diagnostic Module uses the Multi-Axis Acceleration Sensor to determine if the vehicle is in a rollover or near collision incident. The Diagnostic Trouble Code (DTC) will be set if the Lateral Acceleration Sensor signal is out of the specified range.
OBDII Code C0186 2018 GMC Sierra - Lateral Acceleration Sensor Signal - AutoCodes.com
C0186 2018 GMC Sierra Code - Lateral Acceleration Sensor Signal

What are the Possible Causes of the DTC C0186 2018 GMC Sierra?

  • Faulty Lateral Acceleration Sensor (Internal to the Inflatable Restraint Sensing and Diagnostic Module)
  • Lateral Acceleration Sensor harness is open or shorted
  • Lateral Acceleration Sensor circuit poor electrical connection
  • Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C0186 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0186 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 C0186 2018 GMC Sierra code?

Need more information on how to fix the C0186 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 C0186 2018 GMC Sierra Code

1. What does OBDII code C0186 on a 2018 GMC Sierra mean?

The code C0186 indicates a problem with the Lateral Acceleration Sensor Signal in the vehicle.

2. What are the common symptoms of a Lateral Acceleration Sensor Signal issue in a 2018 GMC Sierra?

Common symptoms include the traction control and stability control lights illuminating on the dashboard, erratic handling or steering, and potential difficulty maintaining control of the vehicle.

3. What are possible causes of OBDII code C0186 in a 2018 GMC Sierra?

Potential causes of this code include a faulty lateral acceleration sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's calibration.

4. How can I diagnose the Lateral Acceleration Sensor Signal problem in my 2018 GMC Sierra?

Diagnosing the issue usually involves using a diagnostic scanner to retrieve the specific fault code, inspecting the sensor and its wiring for any visible damage, and conducting a calibration check on the sensor.

5. Can I still drive my 2018 GMC Sierra with the C0186 trouble code?

It is not recommended to drive the vehicle with an active C0186 trouble code, as it can affect the stability and control systems of the vehicle, potentially compromising safety.

6. How can I repair the Lateral Acceleration Sensor Signal issue in my 2018 GMC Sierra?

Repairing the problem may involve replacing the faulty lateral acceleration sensor, repairing any damaged wiring or connectors, and recalibrating the sensor according to manufacturer specifications.

7. Will resetting the trouble code resolve the C0186 issue in my 2018 GMC Sierra?

Simply resetting the trouble code may temporarily clear the warning lights, but it will not fix the underlying problem causing the C0186 code. Proper diagnosis and repair are necessary.

8. Are there any DIY tips for troubleshooting the Lateral Acceleration Sensor Signal problem in a 2018 GMC Sierra?

While basic inspections like checking for loose connections or visible damage can be done DIY, diagnosing and repairing the sensor issue may require specialized tools and expertise best handled by a professional.

9. How much does it typically cost to repair the Lateral Acceleration Sensor Signal problem in a 2018 GMC Sierra?

The cost of repairing the C0186 issue can vary depending on the exact cause of the problem, the labor rates of the repair shop, and the cost of parts needed for the repair.

10. Can a certified mechanic help me with diagnosing and fixing the C0186 trouble code in my 2018 GMC Sierra?

Yes, a certified mechanic with experience in diagnosing OBDII trouble codes should be able to properly diagnose and repair the Lateral Acceleration Sensor Signal issue in your 2018 GMC Sierra.

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