2010-2012 Equinox, Terrain, SRX, LaCrosse & More: Yaw Rate Sensor & StabiliTrak Guide

Symptoms of a Failing Yaw Rate Sensor

A bad yaw rate sensor will almost always disable the vehicle's stability and traction control systems. This is a significant safety issue, as the system can no longer help you maintain control in an emergency maneuver or on slippery surfaces.

• "Service StabiliTrak" or "Service ESC" Message: This is the most common symptom. A message will appear on the Driver Information Center (DIC).
• ABS and Traction Control Lights: The warning lights for the Anti-lock Braking System (ABS) and Traction Control System (TCS) will typically illuminate on the instrument cluster, often alongside the StabiliTrak message.
• "All-Wheel Drive Off" Message (if equipped): On AWD models like the Equinox, Terrain, and SRX, the AWD system may be disabled as a precaution.
• Reduced Engine Power: In some cases, the vehicle may enter a "limp mode" with reduced engine power.
• Unstable Feeling in Turns: With the system disabled, the vehicle may feel less stable or "loose" during cornering.

Common OBD-II Trouble Codes

A professional scan tool that can read chassis codes (C-codes) is required for proper diagnosis. Common codes associated with a failing yaw rate sensor include:

• C0196: Yaw Rate Circuit Malfunction
• C0186: Lateral Acceleration Sensor Circuit
• C0287: Longitudinal Acceleration Sensor Circuit
• C019B: Yaw Rate Signal Not Plausible
• U1826-71: Invalid data from yaw sensor

It's important to note that other issues, like a faulty wheel speed sensor, a bad steering angle sensor, or even low system voltage, can also trigger a "Service StabiliTrak" message. Proper diagnosis is key before replacing parts.

Vehicle-Specific Information & Known Issues

This yaw rate sensor is shared across several GM platforms from the 2010-2012 model years. While the part is the same, its location and some related issues can differ.

Chevrolet Equinox & GMC Terrain (2010-2012)

On the Equinox and Terrain, the yaw rate sensor is typically located under the center console. However, many "Service StabiliTrak" issues on these vehicles are not caused by the yaw sensor itself, but by failed wheel speed sensors or the magnetic tone rings on the wheel hub assemblies. 🎬 Watch: Fixing Equinox AWD ABS and StabiliTrak lights Water intrusion into connectors is also a known problem that can cause intermittent faults. Before replacing the yaw sensor, it is critical to rule out a bad wheel hub/speed sensor, which is a more common failure point on these SUVs.

Cadillac SRX & Saab 9-4X (2010-2012)

On the Cadillac SRX and its rebadged twin, the Saab 9-4X, the yaw rate sensor is located under the driver's seat, beneath the carpet. This requires removing the driver's seat for access. In these vehicles, the part is officially called the "Multi-Axis Acceleration Sensor".

Buick LaCrosse, Buick Allure & Saab 9-5 (2010-2012)

For these sedans, the sensor is most commonly found under the center console, similar to the Equinox/Terrain. Access involves removing the console trim pieces. Water damage from spills can be a failure mode in this location.

Programming and Calibration Requirements

This is the most critical part of the replacement process. A new or used yaw rate sensor MUST be calibrated to the vehicle using a professional scan tool.

• Is Programming Required? Yes. After installation, a "Yaw Rate Sensor Learn" or "Yaw Rate Sensor Reset" procedure must be performed with a scan tool like a GM Tech 2 or GM MDI.
• What does calibration do? The procedure sets the sensor's "zero point" when the vehicle is on a perfectly level surface and not moving. Without this calibration, the Electronic Brake Control Module (EBCM) will receive incorrect data, the StabiliTrak light will remain on, and the system will not function.
• Can a DIYer do it? Not without the proper scan tool. While the physical replacement is straightforward for a mechanically inclined person, the final calibration step requires a visit to a dealership or a well-equipped independent shop. Some high-end consumer scan tools may offer this function, but it is not guaranteed.
• Is there an anti-theft link? No, this module is not tied to the vehicle's immobilizer system. The vehicle will start and run with an uncalibrated sensor, but the safety systems will be disabled.

Buying a Used Electronic Stability System Control Module

A used OEM module is a cost-effective and reliable alternative to an expensive new part, especially since aftermarket options are limited. However, there are important things to consider.

• Verify the Part Number: Match the part number on your original module to the used one. The primary OEM numbers are 12784983, 13505726, and 13575610. GM has since superseded these with part number 13514501, which is also compatible.
• Inspect for Physical Damage: Do not buy a sensor that shows any signs of a cracked case, damaged connector, or corrosion on the pins. The sensor must be mounted perfectly flat, so any damage to the mounting tabs is also a red flag.
• Avoid Flood-Damaged Parts: Because these sensors are often located on the floor of the vehicle under the console or seat, they are highly susceptible to damage in flood vehicles. Ask the seller about the donor vehicle's history. A reputable recycler will not sell parts from flood cars.
• Warranty is Key: Only purchase a used module that comes with a warranty. This protects you in case the part is faulty, as internal electronic failures are not visible from the outside.
• Why Used OEM is a Good Choice: For an electronic module like this, a part from a low-mileage, accident-free vehicle is often more reliable than a new, unbranded aftermarket part. The quality control and engineering of the original GM part are proven.

Cost of Replacement

Prices can vary significantly based on the source of the part and labor rates in your area.

Note: Labor costs typically include diagnosis, installation, and calibration. If you install the part yourself, you will still need to pay a shop for the calibration procedure.

Frequently Asked Questions (FAQ)