2016 GMC Sierra 1500 B0083 Left Front Impact Sensor

2016 GMC Sierra


  • 5.3L EcoTec3 V8 Engine
  • Horsepower: Approximately 355 hp
  • Torque: Approximately 383 lb-ft


  • 6-speed automatic transmission

Fuel Economy:

  • The EPA estimated fuel economy is around 16-18 MPG city and 22-24 MPG highway.

If you’re an owner of a 2016 GMC Sierra with the 5.3L engine and have encountered the diagnostic trouble code (DTC) B0083 related to the left front impact sensor, it’s crucial to grasp the issue’s significance and take necessary actions to address it promptly. This article will provide insights into the B0083 code, explaining its implications, and offering guidance on effective methods for resolving it. The B0083 code points to the left front impact sensor, which is a crucial component of your vehicle’s safety system.

Decoding the B0083 Code:

The Airbag Control Module (ACM) triggers the B0083 code when it detects an issue with the left front impact sensor. This sensor is a pivotal part of your vehicle’s Supplemental Restraint System (SRS), responsible for detecting collisions and rapid deceleration. It plays a vital role in determining the timing and force required for airbag deployment during a collision, ensuring optimal occupant protection.


Possible Causes of B0083 Left Front Impact Sensor Code:

  • Faulty Left Front Impact Sensor: A malfunction in the left front impact sensor itself can lead to inaccurate collision detection and improper airbag deployment.
impact sensor

A vehicle’s impact sensor plays a critical role in enhancing occupant safety during accidents. The impact sensor is integrated into the vehicle’s safety system. The sensor is designed to detect sudden changes in velocity, deceleration, or forces associated with a collision.

  • Wiring or Connector Issues: Damaged wiring or loose connectors within the left front impact sensor circuit can disrupt proper sensor operation.
  • Corrosion or Contamination: Corrosion or contamination on sensor connectors or terminals can lead to faulty signals.
  • ACM Malfunction: A problem with the Airbag Control Module can affect communication with the left front impact sensor, triggering the B0083 code.

Steps to Diagnose and Resolve B0083 Left Front Impact Sensor:

  1. Visual Inspection: Start by visually inspecting the wiring, connectors, and sensor components for any visible damage or loose connections.
  2. Check for Corrosion: Examine sensor connectors and terminals for signs of corrosion or contamination. Clean or replace components as needed.
  3. Test Left Front Impact Sensor: Use a multimeter to test the left front impact sensor’s resistance and voltage. Compare the readings to manufacturer specifications.
  4. ACM Communication Test: Perform a diagnostic scan using professional tools. Check for proper communication between the Airbag Control Module and the left front impact sensor.
  5. Diagnostic Scan: Retrieve specific data and trouble codes related to the B0083 issue using a diagnostic tool. This can provide insights into the root cause of the problem.
  6. Clear Codes and Test: After addressing the issue, clear the B0083 code using the diagnostic tool. Conduct thorough tests to ensure proper sensor function and accurate collision detection.

The B0083 code on a 2016 GMC Sierra related to the left front impact sensor highlights a potential problem within the vehicle’s safety system. Swift diagnosis and resolution are paramount for ensuring the safety of occupants during collisions. While some initial troubleshooting can be done, consulting a professional GMC mechanic for thorough diagnostics and repairs is highly recommended. Prioritizing safety and addressing trouble codes promptly will secure and protected driving experience in your GMC Sierra.

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