Result:

p0218

Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Transmission Fluid Over Temperature Condition

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Transmission Fluid Overtemperature (4L60-E Transmission)
Cause:
    DTC P0711, P0712 and P0713 not set, key on for 5 seconds, then the VCM detected that the TFT sensor input indicated more than 266°F, conditions met for 10 minutes

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