Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The ignition must be in the RUN or ACC position.
The system voltage is at least 9.5 V and no more than 15.5 V.
All the above conditions are present for greater than 10 seconds.