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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Tire Pressure Monitoring System) >> Diagnostic Information and Procedures >> DTC C0750, C0755, C0760, or C0765 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

With ATG

  1. Verify there are no communication DTCs set along with DTC C0750, C0755, C0760, and C0765.
    • Go to next step: If a communication DTC is not set 
  2. Perform the Tire Pressure Sensor Signal Reset and verify the scan tool Tire Pressure Signal Frame Count parameter increases by less than 3 counts per minute when driving over 40km/h (25mph) for at least 8 minutes on one or more tires.
    • If the Tire Pressure Signal Frame Count parameter increases by less than 3 counts per minute when driving over 40km/h (25mph) for at least 8 minutes on one or more tires 
      NOTE:

      When moving the tire pressure sensor to a different location on the vehicle, keep the tire pressure sensor with the original tire it is installed in.

    2. Move the appropriate tire to a different location on the vehicle and drive the vehicle for at least 8 minutes over 40km/h (25mph). Verify the Tire Pressure Signal Frame Count has better performance. Refer to Tire and Wheel Removal and Installation (Without Dual Rear Wheels) , or Tire and Wheel Removal and Installation (With Dual Rear Wheels) .
      • If Tire Pressure Signal Frame Count parameter does not increase by at least 3 counts every minute after moving tire to different location, replace the appropriate B2 Tire Pressure Sensor and perform the Tire Pressure Indicator Sensor Learn .
      • If Tire Pressure Signal Frame Count parameter does increase by at least 3 counts every minute after moving tire to different location, check for any aftermarket devices that could be causing interference to the tire pressure sensor signal. Unplug the device and re-run test.
    • Go to next step: If the Tire Pressure Signal Frame Count parameter increases by more than 3 counts per minute when driving over 40km/h (25mph) for at least 8 minutes on one or more tires 
  3. Verify if all 4 tire monitor pressure sensor DTCs are not set.
    • If 2 or more tire monitor pressure sensor DTCs are set, test the keyless entry antenna for proper operation, or if antenna is properly seated. Refer to Keyless Entry System Malfunction
  4. Perform the Tire Pressure Indicator Sensor Learn .
  5. Verify the scan tool Tire Pressure Sensor Mode parameters change to Drive while driving the vehicle above 40 km/h (25 mph) for greater than 2 min.
    • If a Tire Pressure Sensor Mode parameter does not change to Drive 
    1. Replace the appropriate B2 Tire Pressure Sensor.
    2. Perform the Tire Pressure Indicator Sensor Learn .
    • Go to next step: If the Tire Pressure Sensor Mode parameter changes to Drive 
  6. All OK.

With ATH

  1. Verify there are no communication DTCs set along with DTC C0750, C0755, C0760, and C0765.
    • Go to next step: If a communication DTC is not set 
  2. Verify the scan tool Hit Rate parameter of all 4 tire pressure sensors is above 50%.
    • If the Hit Rate parameter is below 50% on one or more tires 
      NOTE:

      When moving the tire pressure sensor to a different location on the vehicle, keep the tire pressure sensor with the original tire it is installed in.

    2. Move the appropriate tire to a different location on the vehicle and verify the Hit Rate has increased. Refer to Tire and Wheel Removal and Installation (Without Dual Rear Wheels) , or Tire and Wheel Removal and Installation (With Dual Rear Wheels) .
      • If Hit Rate parameter does not increase after moving tire to different location, replace the appropriate B2 Tire Pressure Sensor and perform the Tire Pressure Indicator Sensor Learn .
      • If Hit Rate parameter does increase after moving tire to different location, check for any aftermarket devices that could be causing interference to the tire pressure sensor signal.
    • Go to next step: If the Hit Rate parameter is above 50% 
  3. Verify if all 4 tire monitor pressure sensor DTCs are not set.
    • If 2 or more tire monitor pressure sensor DTCs are set, test the keyless entry antenna for proper operation, or if antenna is properly seated. Refer to Keyless Entry System Malfunction
  4. Perform the Tire Pressure Indicator Sensor Learn .
  5. Verify the scan tool Tire Pressure Sensor Mode parameters change to Drive while driving the vehicle above 40 km/h (25 mph) for greater than 2 min.
    • If a Tire Pressure Sensor Mode parameter does not change to Drive 
    1. Replace the appropriate B2 Tire Pressure Sensor.
    2. Perform the Tire Pressure Indicator Sensor Learn .
    • Go to next step: If the Tire Pressure Sensor Mode parameter changes to Drive 
  6. All OK.
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