B0013 on 2009-2014 Chevrolet Traverse: Airbag Light Causes and Fixes

What's Unique About the 2009-2014 Chevrolet TRAVERSE

The first-generation Chevrolet Traverse and its GM Lambda platform siblings (2008-2014 Buick Enclave, 2007-2014 GMC Acadia, 2007-2009 Saturn Outlook) are known for intermittent airbag faults caused by poor connector integrity. General Motors issued a widespread Technical Service Bulletin (TSB #08-09-41-002H) that specifically identifies the Connector Position Assurance (CPA) retainer—a small plastic lock on the yellow airbag connectors—as a common failure point causing this and other related codes. The plastic becomes brittle with age and breaks, preventing a secure connection. This makes a simple connector inspection the most critical first step, ahead of replacing any expensive components.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Airbag warning light is constantly illuminated on the dashboard.
• "Service Air Bag" message appears on the Driver Information Center (DIC).

Most Likely Causes

1. Loose, Damaged, or Missing Connector Position Assurance (CPA) Retainer 🔴 High Probability This is a well-documented issue across dozens of GM models from this era, including the Traverse, as specified in TSB #08-09-41-002H. The small plastic CPA clips become brittle and fail, causing a poor connection that leads to a high resistance fault.
   How to confirm: Visually inspect the yellow airbag connectors related to the driver's airbag, particularly at the back of the airbag module itself and at the base of the steering column. Check if the small plastic CPA lock is broken, loose, or missing.
   Typical fix: Replace the faulty CPA retainer (GM Part #88988974). If the connector housing or terminals are damaged, the connector pigtail will need to be replaced. 🎬 Watch: A simple guide to replacing damaged airbag connectors.
   Est. part cost: $5-$15 for a CPA retainer, $20-$50 for a connector pigtail.
2. Poor Terminal Tension or Corrosion in Airbag Connectors 🟡 Medium Probability Vibrations and age can lead to loosened terminals within the connector housing. Another GM bulletin, PI1474, specifically addresses poor terminal tension in the clock spring connector (X3) as a cause for B0012/B0013. Special Coverage Adjustment #15536 also notes issues with corrosion in seat-mounted airbag connectors on these vehicles, highlighting a systemic issue with connector quality.
   How to confirm: After disabling the SIR system and disconnecting the connector, use a special terminal test probe (like J-35616) to check for proper pin grip. Visually inspect for any green or white corrosion on the pins. A user on Chevrolet Forum fixed B0012/B0013 by cleaning the clock spring contacts with a needle and slightly bending the pins for a tighter connection.
   Typical fix: Clean corroded terminals using a specialized electronic cleaner. If terminal tension is poor, the terminal or the entire connector pigtail must be replaced using SIR-approved repair methods. GM offers a service connector (P/N 13580115) for the clock spring harness.
   Est. part cost: $20-$50 for a connector pigtail.
3. Faulty Clock Spring (Steering Wheel Airbag Coil) ⚪ Low Probability The clock spring contains a flexible ribbon cable that allows the steering wheel to turn while maintaining an electrical connection. Over time, these wires can fatigue and break, causing an open circuit or high resistance.
   How to confirm: This is typically diagnosed after confirming the external connectors and wiring are good. It involves testing for continuity through the clock spring with a multimeter (with the airbag and SDM disconnected). A user on acadiaforum.net reported that replacing the clock spring was the ultimate fix after connector cleaning failed.
   Typical fix: Replace the clock spring assembly. An OEM replacement part number for some Traverse models is 23248441, which supersedes the older 15899023. 🎬 See this walkthrough on how to replace the clock spring.
   Est. part cost: $75-$250

Rare But Worth Checking

• Chafed Wiring Inside Steering Wheel: A sharp edge on the steering wheel's stamped steel horn plate can rub through the insulation of the yellow SIR wiring harness, causing it to ground out and trigger low resistance codes B0012 and B0013. This may also cause the horn to stop working.
• Interference from Aftermarket 12V Accessories: GM issued bulletin PIT5564A noting that some aftermarket phone chargers or USB adapters plugged into the 12V power outlets can create electrical interference, causing the SDM to falsely report high and low resistance faults. If the code is intermittent, try unplugging all accessories.
• Faulty Sensing and Diagnostic Module (SDM): It is rare for the airbag control module itself to fail, but it can happen. The SDM is located under the center console between the front seats. This should only be considered after all wiring, connectors, and components in the B0013 circuit have been thoroughly tested and ruled out.

Diagnosis Steps

1. CRITICAL SAFETY WARNING: The Supplemental Inflatable Restraint (SIR) system must be disabled before any work is performed. Disconnect the negative battery terminal and wait at least 15 minutes for the system's backup power to discharge. Failure to do so can result in accidental airbag deployment and serious injury.
2. Scan the SIR module with a professional scan tool capable of reading manufacturer-specific B-codes and their symptom bytes (e.g., 04, 0D, 0E). A basic code reader will not work.
3. Based on the code, locate the relevant circuit. For B0013, this is the driver's steering wheel airbag.
4. Remove the driver's airbag from the steering wheel to access the primary connectors. This usually involves inserting a small, blunt tool into holes on the side of the steering wheel to release spring clips.
5. Inspect the yellow airbag connectors and their Connector Position Assurance (CPA) retainers. Check if the CPA is broken, loose, or missing, as highlighted in TSB #08-09-41-002H.
6. Disconnect the connector and inspect the terminals for corrosion, damage, or being backed out of the housing. Check for proper terminal tension using a specific test probe if available.
7. If connectors and CPAs appear intact, inspect the wiring harness inside the steering wheel for any signs of chafing against the horn plate.
8. If wiring and connectors are confirmed to be good, the fault may lie with the clock spring or, rarely, the SDM itself. This level of diagnosis is best left to a professional.
9. After the repair, reconnect the battery and use a scan tool to clear the DTCs from the SIR module. Verify the airbag light turns off and does not return. The light will come back on immediately if the fault persists.

Parts You'll Likely Need

• Connector Position Assurance (CPA) Retainer (OEM #88988974) — This small plastic clip is the most common failure point identified in GM TSB #08-09-41-002H for causing intermittent high resistance faults. The plastic becomes brittle and breaks.
  Trusted brands: ACDelco, GM Genuine Parts
  OEM price range: $5-$15
  Aftermarket price range: $2-$10
• Airbag Connector Pigtail (OEM #13580115 (Clock Spring Connector)) — Needed if the connector housing is damaged or if the terminals are corroded or have lost tension, preventing a secure connection. Part number 13580115 is specifically for the clock spring connector per bulletin PI1474.
  Trusted brands: ACDelco, Dorman
  OEM price range: $30-$60
  Aftermarket price range: $15-$40
• Clock Spring (SIR Coil) (OEM #23248441) — This is the next most likely part to fail if the external connectors are in good condition. The internal ribbon cable can break from repeated steering wheel movement. A user on the Acadia forums confirmed this fixed their B0012/B0013 codes. The part number 23248441 supersedes the previous number 15899023.
  Trusted brands: ACDelco, Standard Motor Products
  OEM price range: $170-$260
  Aftermarket price range: $75-$150

Related Codes That Often Appear With This One

• B0012 — This code relates to the 'Stage 1' deployment loop of the same driver's airbag. Both codes are often caused by the same connector issues and are listed together in TSB #08-09-41-002H and PI1474.
• B0015, B0016, B0019, B0020, etc. — These are codes for other airbag deployment loops in the vehicle (passenger, side, seat belt). Their appearance alongside B0013 points towards the systemic connector issues described in TSB #08-09-41-002H, as the same faulty CPA retainer design was used on multiple circuits.

Technical Service Bulletins (TSBs) & Recalls

• 08-09-41-002H
• PI1474
• 15536 (Special Coverage)
• PIT5564A

Platform-Specific Known Issues

• TSB #08-09-41-002H: This is the most relevant document, directly addressing intermittent airbag lights with code B0013 by pointing to the inspection and replacement of the Connector Position Assurance (CPA) retainer. It covers a vast range of GM vehicles, including the 2009-2014 Traverse.
• TSB #PI1474: While for a different model year, this bulletin is highly relevant as it addresses codes B0012 and B0013 caused by poor terminal tension in the steering wheel airbag coil connector, a potential cause on the Traverse as well.
• Special Coverage Adjustment #15536: This program addressed faulty repairs made under a previous recall (14030) for side-impact airbag connectors under the front seats. While not directly for code B0013, it demonstrates the prevalence of airbag connector issues on this platform.

Mechanic-Grade Diagnostic Values

• Driver Frontal Deployment Loop Stage 2 Resistance — expected: 2.1 - 4.0 Ohms. Failure: A reading greater than ~4.4-5.1 Ohms or less than ~1.3-1.7 Ohms will set a code. The exact threshold can vary slightly by model year and software calibration.

Hidden / Shadow Codes Worth Checking

• B0013 0D: Driver Frontal Deployment Loop Stage 2 Resistance Above Threshold. This is the most common symptom byte for this issue and directly points to high resistance from a poor connection, often the CPA retainer. (see via A professional scan tool like the GM Tech2 (pre-2013 models) or GDS2 (2013+ models) is required.)
• B0013 0E: Driver Frontal Deployment Loop Stage 2 Resistance Below Threshold. This indicates a short circuit or partial short in the wiring, clock spring, or connector. (see via A professional scan tool like the GM Tech2 or GDS2.)
• B0013 04: Driver Frontal Deployment Loop Stage 2 Open Circuit. This indicates a complete break in the circuit, which could be a disconnected connector, broken wire, or failed clock spring. (see via A professional scan tool like the GM Tech2 or GDS2.)

Scan Tool Commands That Help

• GM GDS2 / Tech2: SIR Data Display / Live Data — This function is critical for diagnosing intermittent faults. A technician can display the 'Deployment Loop Resistance' parameter in real-time while wiggling connectors and turning the steering wheel. A sudden spike or dropout in the resistance value precisely when a wire is moved confirms the location of the fault without replacing parts unnecessarily.
• GM GDS2 / Tech2: Clear SIR DTCs — After a repair is completed, the airbag light will not turn off by itself. This function must be used to erase the stored B0013 code from the Sensing and Diagnostic Module (SDM). If the fault is still present, the code will reappear immediately.

Wiring & Ground Locations

• SDM (Sensing and Diagnostic Module) — Under the center floor console, between the front seats. Access requires removing the console.. This is the airbag control computer that sets the code. While rarely the cause, its connectors are a potential point of failure and must be checked in complex cases.
• X3 Connector — The connector for the steering wheel airbag coil (clock spring), located at the base of the steering column under the trim cover.. This is a primary connection point for the driver's airbag circuits. GM issued a separate bulletin (PI1474) specifically for checking poor terminal tension at this connector for B0013.
• G303 — A chassis ground point located near the base of the driver's side 'B' pillar.. The SDM and other interior modules rely on clean ground connections. A loose or corroded G303 can cause unpredictable electrical issues in the SIR system.
• F40 Fuse (10A) — Located in the main underhood fuse block.. This fuse supplies power to the airbag system. While a blown fuse would likely cause a no-communication issue rather than a specific loop code, it is a fundamental check.

Real Owner Repair Stories

• Synthesized from technician repair videos (A&M Moto-Works, Daniels Customs) (2006 Chevrolet Malibu (demonstrating the same TSB-related fault)) — Airbag light on, DTC B0013 stored in the SIR module.
  ❌ Tried (didn't work) Clearing the code without a physical repair (code returned instantly).
  ✅ What actually fixed it The technician disconnected the battery, removed the driver's airbag, and inspected the yellow connector. The orange CPA retainer clip was found to be broken. A new CPA retainer (P/N 88988974) was installed, the connector was re-seated, and the airbag was reinstalled. After clearing the code with a scan tool, the airbag light stayed off, confirming the fix.

OEM Part Supersession History

• 15899023 → 23248441 — Standard part evolution for design improvements or manufacturer changes.
  Heads up: The new part number (23248441) replaces several older numbers, including 15899023, 20952441, 20982802, 25811625, and 25941116, and should be a direct fit for applications without a heated steering wheel.

Model Year Variations Within This Range

• 2009-2013 vs 2013-2014: The factory diagnostic software used by dealerships changed. Models up to 2013 are typically diagnosed using the Tech2Win software platform. Models from 2013 onward (coinciding with the vehicle's mid-cycle refresh) use the newer Global Diagnostic System 2 (GDS2). While both can read the code, the user interface and available functions may differ slightly.