2019-2021 Chevy Blazer Tire Pressure Sensor TPMS Light Reset Guide

Time needed: 7 minutes

If you replacing a spare tire with a road tire containing the TPMS sensor on your 2019 2020 2021 Chevy Blazer, the system will detect a malfunction and the low tire pressure warning light will blink. When that happens, the TPMS sensor reset process must be done. You’ll need TPMS Relearn Tool to reset the Tire Pressure Monitoring System on this model. Follow these steps to do it:

1. Turn the car in Service Mode

   Press and holds the ENGINE START/STOP button for 5 seconds without touching the brake pedal

2. Press the ◄ navigation button to access the cluster applications

   The button is located on the steering wheel
   

3. Select INFO

   Press the thumbwheel to enter the menu

4. Go to TIRE PRESSURE menu

   Use the ▲▼ navigation button to scroll the menu

5. Press and hold the thumbwheel

   The horn will sound twice and the TIRE LEARNING ACTIVE message will appear on the screen

6. Start from the driver side front tire, use the TPMS Relearn tool to reset the tpms sensor

   Place the relearn tool against the tire sidewall, near the valve stem. Then press the button to activate the TPMS sensor

7. Repeat the process for the passenger side front tire, passenger side rear tire, and the driver side rear tire

   A chirp horn will confirm that the sensor has been reset

8. Turn off the ignition after you reset the last tire

   The TIRE LEARNING ACTIVE message will disappear

9. Adjust the tire pressure in all four tires recommended on the tire placard

   Done!