B1147 GMC Code - Driver Side Air Bag System Malfunction
Quick Answer
When the ignition switch is turned to RUN position, Side Impact Sensing Module (SISM) will perform tests to diagnose critical internal malfunctions. Common causes include Faulty Driver Side Air Bag, Driver Side Air Bag harness is open or shorted, Driver Side 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
- B1147 GMC indicates Driver Side Air Bag System Malfunction.
- Common causes
- Common causes include Faulty Driver Side Air Bag, Driver Side Air Bag harness is open or shorted, Driver Side 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.
Code B1147 GMC Description
What are the Possible Causes of the DTC B1147 GMC?
- Faulty Driver Side Air Bag
- Driver Side Air Bag harness is open or shorted
- Driver Side Air Bag circuit poor electrical connection
- Faulty Side Impact Sensing Module (SISM)
- Faulty Sensing and Diagnostic Module (SDM)
How to Fix the DTC B1147 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 B1147 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.
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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.
Frequently Asked Questions about B1147 GMC Code
1. What are the common symptoms of OBDII code B1147 GMC (Driver Side Air Bag System Malfunction)?
- The common symptoms include the airbag warning light illuminated on the dashboard, the airbag system not deploying in the event of a collision, and a diagnostic trouble code B1147 stored in the vehicle's computer.
2. What are the possible causes of OBDII code B1147 GMC?
- The possible causes of this code include a faulty driver side airbag module, damaged wiring or connectors in the airbag system, or a problem with the airbag control module.
3. How can I diagnose OBDII code B1147 GMC?
- Diagnosis involves using an OBDII scanner to retrieve the trouble code, inspecting the wiring and connectors in the driver side airbag system, and testing the airbag module for proper functionality.
4. Can I still drive my vehicle with OBDII code B1147 GMC?
- It is not recommended to drive the vehicle with a malfunctioning driver side airbag system, as the airbag may not deploy in the event of a collision, increasing the risk of injury.
5. How can I repair OBDII code B1147 GMC?
- Repairing this code involves addressing the root cause of the malfunction, which may include replacing the faulty driver side airbag module, repairing damaged wiring or connectors, or reprogramming the airbag control module.
6. Is it safe to reset the OBDII code B1147 GMC without fixing the underlying issue?
- It is not safe to reset the code without addressing the underlying issue, as the driver side airbag system may still be malfunctioning, putting you at risk in the event of an accident.
7. How much does it cost to repair OBDII code B1147 GMC?
- The cost of repair can vary depending on the specific cause of the malfunction, but it may involve parts replacement, labor costs, and diagnostic fees from a qualified mechanic or dealership.
8. Can a DIY enthusiast fix OBDII code B1147 GMC at home?
- While some basic troubleshooting steps can be performed at home, fixing OBDII code B1147 GMC may require specialized tools and expertise, so it is recommended to seek professional help for proper diagnosis and repair.
9. Will OBDII code B1147 GMC affect the vehicle's overall safety?
- Yes, a malfunctioning driver side airbag system indicated by OBDII code B1147 GMC can compromise the vehicle's safety in the event of a collision, as the airbag may not deploy as intended to protect the driver.
10. How often should I have the driver side airbag system inspected to prevent OBDII code B1147 GMC?
- It is recommended to have the airbag system inspected regularly as part of routine maintenance or whenever you notice any warning signs of a malfunction to prevent OBDII code B1147 GMC and ensure the system's proper functionality.
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