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B1019 2016 GMC Sierra Code - SDM System Configuration Error

Quick Answer

The B1019 diagnostic trouble code (DTC) in a 2016 GMC Sierra indicates a problem with the Supplemental Restraint System (SRS), specifically the Sensing Diagnostic Module (SDM) system configuration. Common causes include Faulty Sensing Diagnostic Module (SDM), Poor electrical connection or wiring issues, Software malfunction in the SDM system. 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
B1019 2016 GMC Sierra indicates SDM System Configuration Error.
Common causes
Common causes include Faulty Sensing Diagnostic Module (SDM), Poor electrical connection or wiring issues, Software malfunction in the SDM system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B1019 2016 GMC Sierra Description

The B1019 diagnostic trouble code (DTC) in a 2016 GMC Sierra indicates a problem with the Supplemental Restraint System (SRS), specifically the Sensing Diagnostic Module (SDM) system configuration. The SDM is a crucial component of the vehicle's airbag system, responsible for monitoring various sensors and determining when to deploy the airbags in the event of a collision. When the SDM system configuration error occurs, it means that the module is not receiving or processing the correct data, which can potentially compromise the effectiveness of the airbags in a crash.

OBDII Code B1019 2016 GMC Sierra - SDM System Configuration Error
B1019 2016 GMC Sierra Code - SDM System Configuration Error

Common Causes of B1019 2016 GMC Sierra

  1. Faulty Sensing Diagnostic Module (SDM)
  2. Poor electrical connection or wiring issues
  3. Software malfunction in the SDM system
  4. Damaged impact sensors or other SRS components

Symptoms of B1019 2016 GMC Sierra

  1. Illumination of the airbag warning light on the dashboard
  2. Inability to reset the airbag warning light after clearing the code
  3. Inconsistent or erratic deployment of the airbags during testing
  4. Diagnostic trouble codes related to other SRS components

How to Fix B1019 2016 GMC Sierra

  1. Diagnose the specific cause of the SDM system configuration error using a scan tool capable of reading SRS codes.
  2. Inspect the wiring connections and harnesses for any signs of damage or corrosion, and repair or replace as needed.
  3. Check the SDM and other SRS components for faults, and replace any defective parts.
  4. Clear the DTC from the system memory and perform a test to ensure that the error has been resolved.
  5. If the issue persists, reprogram the SDM system or seek assistance from a professional technician for further diagnosis.

Cost to Fix B1019 2016 GMC Sierra

The cost of repairing a B1019 error in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the parts required for this repair, such as a new SDM or wiring harness, can range from $200 to $500. Labor costs for this type of repair typically fall between $100 to $300, with total repair costs averaging between $300 to $800. However, these estimates are approximate and may vary based on factors such as location, dealership vs. independent repair shop rates, and the complexity of the repair process. It is recommended to consult with a trusted mechanic or dealership for a more accurate cost assessment.

What does this mean?

Tech Notes for B1019 2016 GMC Sierra

B1019:3A SDM System Configuration Error Incorrect Component Installed



Diagnostic Trouble Code (DTC) B1019 can be set after the Inflatable Restraint Sensing and Diagnostic Module (SDM) has been replaced and/or reprogrammed before the setup procedure is completed. The setup procedure cannot be completed if DTC B1019 is set as current or history. If a short or open is detected in a deployment circuit prior to the setup procedure being performed, the inflatable restraint sensing and diagnostic module will set DTC B1019.

Need more information about the B1019 2016 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 B1019 2016 GMC Sierra Code

1. What does the OBDII code B1019 for a 2016 GMC Sierra mean?

The code B1019 indicates an SDM (Sensing and Diagnostic Module) System Configuration Error in your 2016 GMC Sierra.

2. What are the common symptoms of the SDM System Configuration Error (B1019) in a GMC Sierra?

Common symptoms of this error may include the airbag warning light illuminating on the dashboard, non-functioning airbags, and potential issues with the vehicle's restraint system.

3. What are the possible causes of the SDM System Configuration Error (B1019) in a 2016 GMC Sierra?

Possible causes of this error include a faulty SDM module, issues with the wiring or connections to the SDM module, or a software malfunction within the module.

4. How can I diagnose the SDM System Configuration Error (B1019) in my GMC Sierra?

Diagnosing this error typically involves using an OBDII scanner to retrieve the specific code, checking for any related codes, and inspecting the SDM module and its connections for any visible damage.

5. Can the SDM System Configuration Error (B1019) be repaired at home?

While some basic troubleshooting like checking connections can be done at home, repairing the SDM System Configuration Error often requires specialized tools and expertise. It is advisable to consult a professional mechanic for proper diagnosis and repair.

6. Is it safe to drive my GMC Sierra with the SDM System Configuration Error (B1019)?

It is not recommended to drive your GMC Sierra with the SDM System Configuration Error present, as it may compromise the proper functioning of the airbag system and other safety features in the vehicle.

7. How much does it typically cost to repair the SDM System Configuration Error (B1019) in a 2016 GMC Sierra?

The cost of repairing the SDM System Configuration Error can vary depending on the exact cause of the issue, parts needed, and labor costs. It is advisable to get a few quotes from different mechanics to compare prices.

8. Can resetting the error code B1019 fix the issue temporarily?

Resetting the error code B1019 may temporarily clear the warning light, but it is not a permanent solution. The underlying issue causing the SDM System Configuration Error will need to be properly diagnosed and repaired.

9. Will disconnecting the battery reset the SDM System Configuration Error code B1019?

Disconnecting the battery may reset the error code temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the error.

10. How long does it typically take to repair the SDM System Configuration Error (B1019) in a 2016 GMC Sierra?

The repair time for the SDM System Configuration Error can vary depending on the complexity of the issue and availability of parts. It is best to consult with a mechanic for an accurate estimate of the repair time.

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