Conditions For Setting DTC

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The transmission output speed drop is greater than 1,300 RPM for 3 seconds when the transmission is not in PARK or NEUTRAL.
The transmission output speed drop is greater than 8,129 RPM for 409 seconds when the transmission is in PARK or NEUTRAL.
The transmission output speed drops by greater than 1,300 RPM for 3 seconds when the transmission is not in PARK or NEUTRAL.