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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 123 (TIRE PRESSURE MONITORING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESLOW TIRE PRESSURE INDICATOR MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol

Circuit/System Verification

2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2018 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Low tire pressure in one or more tires is indicated by a continuously illuminated tire pressure monitor indicator icon after the instrument cluster bulb check is completed. If equipped with a driver information center, a check tire pressure type message will also be displayed.

When a tire pressure monitor DTC is set, the tire pressure monitor indicator icon will flash for 1 min after the instrument cluster bulb check is completed and then remains illuminated. If equipped with a driver information center, a service tire monitor type message will also be displayed.

  1. Adjust all tire pressures to the correct pressure. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .
  2. Drive the vehicle over 40 km/h (25 mph) for greater than 2 min.
  3. Verify the low tire pressure indicator is OFF.
    • If the low tire pressure indicator is ON 
    1. Perform the Tire Pressure Indicator Sensor Learn .
    2. Record all 4 Tire Pressure Parameters values from the scan tool.
    3. Check and record the tire pressures with a known accurate hand held tire pressure gauge.
    4. Verify that the scan tool Tire Pressure parameters do not differ more than 27.6 kPa (4 psi) from the actual tire pressure readings.
      • If the scan tool Tire Pressure parameters differ more than 27.6 kPa (4 psi), replace the appropriate B2 Tire Pressure Sensor then perform the Tire Pressure Indicator Sensor Learn .
      • Go to next step: If the scan tool Tire Pressure parameters do not differ more than 27.6 kPa (4 psi)
    5. Verify the BCM Tire Type and Pressure selections are setup correctly with a scan tool. Refer to the Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .
      • If the BCM Tire Type and Pressure selections are incorrect, input the proper placard values for the vehicle with the scan tool then drive the vehicle over 40 km/h (25 mph) for greater than 2 min.
      • Go to next step: If the BCM Tire Type and Pressure selections are correct
    6. Ignition On/Vehicle in Service Mode..
    7. Verify the low tire pressure monitor indicator icon turns ON and OFF when commanding All Indicators ON and OFF with a scan tool.
      • If the low tire pressure monitor icon does not turn ON and OFF, replace the P16 Instrument Cluster.
      • Go to next step: If the low tire pressure monitor icon turns ON and OFF
    8. All OK
    • Go to next step: If the tire pressure indicator is OFF 
  4. All OK
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.