AutoCodes – GMC – B1019 2018 GMC Sierra

B1019 2018 GMC Sierra Code - SDM System Configuration Error

Quick Answer

The Inflatable Restraint Sensing and Diagnostic Module (SDM) monitors the number of safety components installed on the vehicle. Common causes include Program Inflatable Restraint Sensing and Diagnostic Module (SDM), Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted. 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 2018 GMC Sierra indicates SDM System Configuration Error.
Common causes: Common causes include Program Inflatable Restraint Sensing and Diagnostic Module (SDM), Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted.
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 Apr 05, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1019 2018 GMC Sierra Description

The Inflatable Restraint Sensing and Diagnostic Module (SDM) monitors the number of safety components installed on the vehicle. When the ignition is turned ON, the Inflatable Restraint Sensing and Diagnostic Module evaluates the number of safety components installed and compares it to the number of components the Inflatable Restraint Sensing and Diagnostic Module expects to see on the vehicle with its current calibration. If there is a mismatch between the detected components and the components programmed with the Inflatable Restraint Sensing and Diagnostic Module calibration, Diagnostic Trouble Code (DTC) B1019 will be set. The components (if equipped) that the Inflatable Restraint Sensing and Diagnostic Module will detect include inflatable restraint deployment loops, impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.

OBDII Code B1019 2018 GMC Sierra - SDM System Configuration Error - AutoCodes.com — B1019 2018 GMC Sierra Code - SDM System Configuration Error

What does this mean?

What are the Possible Causes of the DTC B1019 2018 GMC Sierra?

Program Inflatable Restraint Sensing and Diagnostic Module (SDM)
Faulty Inflatable Restraint Sensing and Diagnostic Module
Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted
Inflatable Restraint Sensing and Diagnostic Module circuit poor electrical connection

How to Fix the DTC B1019 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

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1019 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 B1019 2018 GMC Sierra code?

Need more information on how to fix the B1019 2018 GMC Sierra code? Get Access to Factory Service Manuals

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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 2018 GMC Sierra Code

1. What does the OBDII code B1019 mean on a 2018 GMC Sierra?

The code B1019 indicates an SDM (Sensing and Diagnostic Module) System Configuration Error, meaning the module's configuration or programming is incorrect or incomplete.

2. What are the common symptoms of code B1019 in a 2018 GMC Sierra?

Symptoms may include an illuminated airbag warning light, issues with airbag deployment systems, or a stored fault code in the vehicle's computer.

3. What causes the B1019 SDM System Configuration Error?

This error is typically caused by incorrect programming, a replacement SDM module that hasnâ€™t been properly configured, or corrupted software in the SDM.

4. Can a faulty SDM module cause the B1019 code?

Yes, a malfunctioning or defective SDM module can lead to this error, especially if it cannot retain or process the correct configuration data.

5. How do you fix the B1019 code on a 2018 GMC Sierra?

The SDM module should be reprogrammed or configured using a GM-compatible scan tool. If the module is damaged, it may need to be replaced and programmed.

6. Do I need to replace the SDM module to resolve code B1019?

Not always. In many cases, reprogramming or reconfiguring the existing SDM module resolves the issue. Replacement is only necessary if the module is defective.

7. Can I drive my GMC Sierra with the B1019 code active?

Itâ€™s not recommended to drive with this code active, as it could indicate a malfunction in the airbag system, potentially compromising safety in an accident.

8. What tools are needed to fix the B1019 code?

A GM-compatible diagnostic scan tool is required to access, reprogram, or reconfigure the SDM module and clear the code.

9. How much does it cost to repair the B1019 code on a 2018 GMC Sierra?

The repair cost depends on whether reprogramming is sufficient or if the SDM module needs replacement. Reprogramming typically costs $100â€“$200, while module replacement can run $400â€“$600 or more.

10. Can a dead battery cause the B1019 code to appear?

A dead or weak battery can sometimes cause configuration issues in the SDM module, leading to this code. Ensure the battery is fully charged and functioning properly before proceeding with diagnostics.