AutoCodes – GMC – B0033 GMC

B0033 GMC Code - Second Row Left Frontal Stage 3 Deployment Control

Quick Answer

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. Common causes include Faulty Second Row Left Frontal Air Bag, Second Row Left Frontal Air Bag harness is open or shorted, Second Row Left Frontal Air Bag 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: B0033 GMC indicates Second Row Left Frontal Stage 3 Deployment Control.
Common causes: Common causes include Faulty Second Row Left Frontal Air Bag, Second Row Left Frontal Air Bag harness is open or shorted, Second Row Left Frontal Air Bag 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 2,011

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0033 GMC Description

When the ignition switch is turned to RUN position, Sensing and Diagnostic Module (SDM) performs tests to diagnose critical internal malfunctions. SDM then performs deployment loop voltage out of range test and deployment loop resistance measurement test. If voltage out of range test detects a short to voltage condition, the resistance measurement test will not be performed.

OBDII Code B0033 GMC - Second Row Left Frontal Stage 3 Deployment Control - AutoCodes.com — B0033 GMC Code - Second Row Left Frontal Stage 3 Deployment Control

What does this mean?

What are the Possible Causes of the DTC B0033 GMC?

Faulty Second Row Left Frontal Air Bag
Second Row Left Frontal Air Bag harness is open or shorted
Second Row Left Frontal Air Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0033 GMC?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0033 GMC 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 B0033 GMC code?

Need more information on how to fix the B0033 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0033 GMC 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 B0033 GMC Code

1. What are the common symptoms of OBDII code B0033 GMC (Second Row Left Frontal Stage 3 Deployment Control)?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the left front airbag in the second row during a collision.

2. What are the possible causes of OBDII code B0033 GMC?

- The code B0033 typically indicates a fault in the Second Row Left Frontal Stage 3 Deployment Control circuit, which could be triggered by issues such as a faulty airbag sensor, wiring issues, or a malfunctioning airbag module.

3. How can I diagnose the OBDII code B0033 GMC?

- Diagnosis involves using a diagnostic scanner to retrieve the specific trouble code B0033 and then conducting a thorough inspection of the airbag system components, including sensors, wiring, and the airbag module.

4. Can I continue driving my vehicle with the OBDII code B0033 GMC present?

- It is not recommended to drive the vehicle with the B0033 code active, as it indicates a potential issue with the airbag system, which is crucial for occupant safety in the event of a collision.

5. What are some repair tips for fixing OBDII code B0033 GMC?

- Repair tips may include inspecting and repairing any damaged wiring, replacing faulty sensors or the airbag module, and clearing the trouble code with a diagnostic scanner after completing the repairs.

6. Is it safe to attempt DIY repairs for OBDII code B0033 GMC?

- It is recommended to have airbag system repairs related to code B0033 performed by a qualified technician or at a certified repair facility to ensure proper diagnosis, repair, and system functionality.

7. How much does it typically cost to repair OBDII code B0033 GMC?

- The cost of repairing the B0033 code can vary depending on the specific underlying issue, parts needed for replacement, and labor costs. It is advisable to obtain quotes from different repair shops for an accurate estimate.

8. Are there any recalls related to OBDII code B0033 GMC?

- It is advisable to check with the manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to the B0033 code for your specific GMC vehicle.

9. How long does it take to repair OBDII code B0033 GMC?

- The repair time for the B0033 code can vary based on the complexity of the issue, availability of parts, and the technician's experience. It is recommended to consult with the repair facility for an estimated repair timeline.

10. Can OBDII code B0033 GMC affect the overall safety of my vehicle?

- Yes, the B0033 code specifically relates to the airbag system's deployment control, and unresolved issues can impact the proper operation of the airbags in the event of a collision, potentially compromising occupant safety.