AutoCodes – GMC – B001B 2018 GMC Sierra

B001B 2018 GMC Sierra Code - Passenger 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 Passenger Seat Belt Anchor Pretensioner, Passenger Seat Belt Anchor Pretensioner harness is open or shorted, Passenger 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: B001B 2018 GMC Sierra indicates Passenger Seat Belt Anchor Pretensioner Deployment Loop.
Common causes: Common causes include Faulty Passenger Seat Belt Anchor Pretensioner, Passenger Seat Belt Anchor Pretensioner harness is open or shorted, Passenger 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 692

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 B001B 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 B001B 2018 GMC Sierra - Passenger Seat Belt Anchor Pretensioner Deployment Loop - AutoCodes.com — B001B 2018 GMC Sierra Code - Passenger Seat Belt Anchor Pretensioner Deployment Loop

What does this mean?

What are the Possible Causes of the DTC B001B 2018 GMC Sierra?

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

How to Fix the DTC B001B 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

B001B:01 Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Battery
B001B:02 Passenger Seat Belt Anchor Pretensioner Deployment Loop Short to Ground
B001B:04 Passenger Seat Belt Anchor Pretensioner Deployment Loop Open
B001B:0D Passenger Seat Belt Anchor Pretensioner Deployment Loop High Resistance
B001B:0E Passenger Seat Belt Anchor Pretensioner Deployment Loop Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B001B 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 B001B 2018 GMC Sierra code?

Need more information on how to fix the B001B 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B001B 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 B001B 2018 GMC Sierra Code

1. What does the OBDII code B001B for a 2018 GMC Sierra mean?

The OBDII code B001B indicates a fault in the Passenger Seat Belt Anchor Pretensioner Deployment Loop system.

2. What are some common symptoms of the B001B code in a 2018 GMC Sierra?

Common symptoms may include the airbag warning light illuminating on the dashboard and possible issues with the passenger seat belt pretensioner.

3. What are possible causes of the B001B code in a 2018 GMC Sierra?

Causes of the B001B code can range from a faulty seat belt pretensioner, damaged wiring, or a malfunction in the deployment loop system.

4. How can I diagnose the B001B code in my 2018 GMC Sierra?

To diagnose the B001B code, it is recommended to use an OBDII scanner to retrieve the specific fault codes and then inspect the seat belt pretensioner system for any visible damage or issues.

5. Can I still drive my 2018 GMC Sierra with the B001B code present?

It is not advisable to drive the vehicle with the B001B code as it indicates a potential safety issue with the passenger seat belt pretensioner system.

6. How can I repair the B001B code in my 2018 GMC Sierra?

Repairing the B001B code may involve replacing the faulty seat belt pretensioner, repairing damaged wiring, or fixing any issues with the deployment loop system as recommended by a qualified mechanic.

7. Is it safe to reset the B001B code in my 2018 GMC Sierra without fixing the underlying issue?

Resetting the B001B code without addressing the root cause can be dangerous as it may compromise the effectiveness of the passenger seat belt pretensioner system in the event of a collision.

8. How much does it typically cost to repair the B001B code in a 2018 GMC Sierra?

The cost of repairing the B001B code can vary depending on the specific issue, but it may involve parts and labor expenses that can range from a few hundred to over a thousand dollars.

9. Can a DIY enthusiast fix the B001B code in a 2018 GMC Sierra?

While some basic troubleshooting steps can be performed by a DIY enthusiast, the complexity of the seat belt pretensioner system may require the expertise of a professional mechanic for a proper repair.

10. How often does the B001B code occur in 2018 GMC Sierra vehicles?

The B001B code may occur infrequently in 2018 GMC Sierra vehicles, but if it does, prompt attention and repair are crucial to ensure the safety of the vehicle's occupants.