Conditions for Running the DTC

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

No ISS DTCs P0716, P0717.
No SS DTC P0974.
Ignition voltage between 8-18 volts.
Transmission is not in PARK.
The engine run time is greater than 6 seconds.