AutoCodes – GMC – B001A 2018 GMC Sierra

B001A 2018 GMC Sierra Code - Driver Seat Belt Anchor Pretensioner Deployment Loop

Quick Answer

The seat belt pretensioner (driver and passenger) consists of a housing, seat belt retractor (located in the B-pillar), seat belt anchor (located in the seat), seat belt webbing, an initiator, and a canister of gas-generating materials. Common causes include Faulty Driver Seat Belt Anchor Pretensioner, Driver Seat Belt Anchor Pretensioner harness is open or shorted, Driver Seat Belt Anchor Pretensioner 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: B001A 2018 GMC Sierra indicates Driver Seat Belt Anchor Pretensioner Deployment Loop.
Common causes: Common causes include Faulty Driver Seat Belt Anchor Pretensioner, Driver Seat Belt Anchor Pretensioner harness is open or shorted, Driver Seat Belt Anchor Pretensioner 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 633

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 Oct 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B001A 2018 GMC Sierra Description

The seat belt pretensioner (driver and passenger) consists of a housing, seat belt retractor (located in the B-pillar), seat belt anchor (located in the seat), seat belt webbing, an initiator, and a canister of gas-generating materials. The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the Inflatable Restraint Sensing and Diagnostic Module (SDM) causes current to flow through the seat belt deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas. The gas produced from this reaction deploys the seat belt pretensioners which removes all of the slack in the seat belts. Depending on the severity of the collision, the seat belt pretensioners may deploy without the frontal air bags deploying, or they will deploy immediately before the frontal air bags deploy. A shorting bar (if equipped) is located in the connector.

OBDII Code B001A 2018 GMC Sierra - Driver Seat Belt Anchor Pretensioner Deployment Loop - AutoCodes.com — B001A 2018 GMC Sierra Code - Driver Seat Belt Anchor Pretensioner Deployment Loop

What does this mean?

What are the Possible Causes of the DTC B001A 2018 GMC Sierra?

Faulty Driver Seat Belt Anchor Pretensioner
Driver Seat Belt Anchor Pretensioner harness is open or shorted
Driver Seat Belt Anchor Pretensioner circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B001A 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

B001A:01 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Battery
B001A:02 Driver Seat Belt Anchor Pretensioner Deployment Loop Short to Ground
B001A:04 Driver Seat Belt Anchor Pretensioner Deployment Loop Open
B001A:0D Driver Seat Belt Anchor Pretensioner Deployment Loop High Resistance
B001A:0E Driver Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B001A 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 B001A 2018 GMC Sierra code?

Need more information on how to fix the B001A 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B001A 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 B001A 2018 GMC Sierra Code

1. What does OBDII code B001A for a 2018 GMC Sierra mean?

The B001A code indicates a problem with the driver seat belt anchor pretensioner deployment loop.

2. What are the common symptoms of OBDII code B001A in a 2018 GMC Sierra?

Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the driver's seat belt pretensioner in the event of a collision.

3. What could cause OBDII code B001A to trigger in a 2018 GMC Sierra?

Possible causes of the B001A code include a faulty driver seat belt pretensioner, damaged wiring in the seat belt system, or a problem with the seat belt anchor.

4. How can I diagnose the issue related to OBDII code B001A in my 2018 GMC Sierra?

Diagnosing the problem typically requires a professional scan tool to read the specific error codes, inspecting the seat belt anchor and pretensioner components, and checking the wiring for any damage or loose connections.

5. Is it safe to drive my 2018 GMC Sierra with OBDII code B001A active?

It is not recommended to drive the vehicle with an active B001A code, as it may affect the proper functioning of the seat belt pretensioner system in the event of an accident.

6. Can I reset the OBDII code B001A in my 2018 GMC Sierra myself?

While you may be able to clear the code temporarily with an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent potential safety risks.

7. How much does it typically cost to repair OBDII code B001A in a 2018 GMC Sierra?

The cost of repairing the B001A code can vary depending on the exact cause of the issue, but it may involve replacing the driver seat belt pretensioner, repairing wiring, or addressing other related components.

8. Are there any recalls or technical service bulletins related to OBDII code B001A in 2018 GMC Sierra vehicles?

It is advisable to check with a GMC dealership or online resources for any recalls or technical service bulletins related to the B001A code in your specific vehicle model year.

9. Can a DIY enthusiast repair OBDII code B001A in a 2018 GMC Sierra?

While some enthusiasts may have the skills to diagnose and repair simple issues related to the B001A code, it is recommended to consult with a professional technician for proper diagnosis and repair to ensure safety and effectiveness.

10. How can I prevent OBDII code B001A from occurring in my 2018 GMC Sierra?

Regular maintenance and inspections of the seat belt system, including checking for any visible damage or wear, can help prevent issues that may trigger the B001A code.