Conditions for Running the DTC

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

No VSS assembly DTCs P0502 or P0503.
No Transmission Component Slipping DTC P1870.
The system voltage is 10-18 volts.
The engine is running for 409 seconds.
The engine coolant temperature (ECT) is greater than 70°C (158°F) and the temperature has changed by 50°C (90°F) since START-UP.
The vehicle speed is greater than 8 km/h (5 mph) for 409 seconds cumulative during the current ignition cycle.
The TFT at start-up is between -40 and +21°C (-40 and +70°F).
The TCC slip speed is greater than 120 RPM for 409 seconds cumulative during the current ignition cycle.