Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

No transmission ISS DTCs P0716, P0717.
No 1-2 shift solenoid high voltage DTC P0974.
Ignition voltage is between 8-18 volts.
The engine run time is greater than 5 seconds.
The input speed sensor change is less than 300 RPM for 2 seconds or greater.
The output speed sensor is 1,000 RPM or greater for 2 seconds or greater.
The output speed sensor change is 500 RPM or less for 2 seconds or greater.
The time since the last range change is 6 seconds or greater.
The time since the 4WD range change is 6 seconds or greater.