Causes of GMC Sierra TPMS Warnings
- Low Tire Pressure: A common cause of TPMS alerts, especially when temperatures change rapidly.
- Sensor Battery Depletion: TPMS sensors have small batteries that eventually drain, typically lasting 5–10 years.
- Interference or Software Issues: Radio signals between the sensors and onboard computer may sometimes fail.
- Tire Rotation or Replacement: Recently serviced or rotated tires can cause TPMS miscommunication until recalibrated.
2. Step-by-Step Troubleshooting Guide for GMC Sierra TPMS
Step 1: Check and Adjust Tire Pressures
Start by manually checking all tire pressures, ensuring they match the recommended PSI in the driver’s door frame or user manual.
Step 2: Reset the TPMS on Your GMC Sierra
- Turn the Ignition On (without starting the engine).
- Press and hold the “INFO” button until the display reads “Tire Pressure.”
- Hold the “SET/RESET” button until “Tire Learning Active” appears.
- Begin with the left front tire and release air until the horn sounds, indicating the sensor is registered.
- Repeat the process clockwise for each tire: right front, right rear, and left rear.
- Turn the ignition off to complete the reset.
Step 3: Drive to Finalize the Reset
After resetting, drive your Sierra above 25 mph for 10–15 minutes. This usually helps finalize sensor recalibration.
Step 4: Use a Diagnostic Tool for Persistent Alerts
If the alert persists, a TPMS diagnostic scan may help pinpoint specific sensor or system errors, allowing for targeted repairs.
3. When to Replace GMC Sierra TPMS Sensors
TPMS sensors in older Sierra models or those with frequent alerts may need battery or sensor replacements. Authorized dealers or tire service centers can install replacements and ensure compatibility with your system.