Conditions for Running the DTC
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- No AT VSS DTC P0502 or P0503.
- No TFP manual valve position switch DTC P1810.
- The system voltage is 8-18 volts.
- TFP manual valve position switch is not indicating PARK or NEUTRAL.
- The vehicle speed is greater than 12 km/h (7 mph).