GMC vehicles, known for their reliability and cutting-edge technology, come equipped with a Tire Pressure Monitoring System (TPMS) designed to enhance safety by monitoring tire pressure levels. When the system detects an issue, it triggers a “Tire Sensor Fault” warning on the dashboard. This warning can appear for several reasons, including sensor damage or low tire pressure. In this guide, we’ll explore common causes of a Tire Sensor Fault and how to fix it in GMC vehicles.
Common Causes of Tire Sensor Fault in GMC Vehicles
Before addressing the fix, it’s essential to understand the common causes of this issue in GMC vehicles:
- Low Tire Pressure: A frequent cause is under-inflated tires. The TPMS system detects if any tire pressure falls below the recommended levels and triggers a warning.
- Damaged or Worn-Out Sensors: Each tire in a GMC vehicle has a sensor inside, mounted on the valve stem. Over time, these sensors can wear out or become damaged, especially during tire changes or rotations.
- Weak Sensor Battery: Tire sensors are battery-operated, and the battery typically lasts between 5 to 10 years. If the sensor’s battery runs low, it may trigger a Tire Sensor Fault warning.
- Software Glitch: Occasionally, a software issue in the vehicle’s TPMS system could cause incorrect readings or malfunction, leading to a false fault message.
- Temperature Fluctuations: Sudden drops or rises in temperature can cause the air in the tires to contract or expand, triggering a temporary tire sensor alert due to pressure changes.
Steps to Fix Tire Sensor Fault in GMC Vehicles
If you’re seeing a Tire Sensor Fault warning in your GMC, here’s a step-by-step guide to fix it:
1. Check Tire Pressure Manually
The first step is to check your tire pressure manually. You’ll need a tire pressure gauge for this:
- Locate the recommended tire pressure for your GMC vehicle in the owner’s manual or on the label inside the driver’s door.
- Use the gauge to check the pressure in each tire.
- If any tire is under-inflated, inflate it to the recommended level.
Once the tire pressure is corrected, drive your vehicle for a few miles to allow the TPMS system to recalibrate. Often, this will clear the Tire Sensor Fault message.
2. Reset the TPMS System
If adjusting the tire pressure doesn’t resolve the issue, the next step is to reset the TPMS system. The process for resetting the system in GMC vehicles varies slightly depending on the model, but it generally follows these steps:
- Turn the vehicle to the On position without starting the engine.
- Use the controls on your steering wheel to navigate to the Tire Pressure Menu in your dashboard.
- Look for an option to Relearn Tire Positions or Reset TPMS.
- Select the option and follow the on-screen instructions, which may require driving the vehicle at a steady speed (around 20 mph) for a few minutes to complete the reset.
If the reset is successful, the fault message should disappear from the dashboard.
3. Inspect the Sensors for Damage
If the Tire Sensor Fault warning persists, it’s possible that one or more of your tire sensors are damaged. This can happen during tire changes, rotations, or from driving on rough terrain. The sensors are located inside each tire, typically attached to the valve stem.
Inspect each tire’s valve stem for any visible damage. If a sensor is damaged, it will need to be replaced. Since replacing sensors requires specialized tools, it’s best to visit a GMC dealership or a certified mechanic to handle the repair.
4. Replace the Sensor Battery
The sensors in GMC vehicles are powered by batteries that, while long-lasting, will eventually deplete. If the battery in a tire sensor is dead, the entire sensor will need to be replaced since the battery itself is not replaceable.
You can get the sensor replaced at a GMC service center or a trusted auto repair shop. This will ensure that the new sensor is properly installed and recalibrated with your vehicle’s TPMS.
5. Update the Vehicle’s Software
Sometimes, a Tire Sensor Fault can be caused by a glitch in the vehicle’s onboard system. GMC regularly releases software updates that can resolve bugs and improve overall vehicle performance. If none of the above solutions work, check with your dealership to see if a software update is available for your model.
Updating your vehicle’s software may resolve the fault and restore full functionality to your TPMS system.
Preventing Future Tire Sensor Faults
- Regular Tire Pressure Checks: Make it a habit to check your tire pressure at least once a month. This is especially important during seasonal changes when temperature fluctuations can affect tire pressure.
- Careful Handling During Tire Changes: If you’re having your tires rotated or changed, ensure the technician is careful with the TPMS sensors to avoid damaging them.
- Routine Sensor Maintenance: During regular maintenance checks, ask your mechanic to inspect the tire sensors and their batteries to catch any potential issues before they trigger a fault.
- Keep Software Up to Date: Make sure your vehicle’s software is regularly updated to prevent system glitches from causing sensor faults.
Conclusion
While a Tire Sensor Fault in your GMC vehicle can be frustrating, it’s often an easy fix. By checking your tire pressure, resetting the TPMS system, and inspecting the sensors, you can resolve the issue quickly. If the problem persists, visit a GMC-certified service center for professional assistance. Keeping your tire sensors in good condition and maintaining proper tire pressure will ensure safe and smooth driving for years to come.