Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2004 GMC Yukon XL and 2004 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.

All motor activity stops.
All the transfer case shift control switch mode indicators are commanded OFF.
The SERVICE 4WD indicator is latched on for the remainder of the current ignition cycle.
If a new mode is requested while the DTC is present, either current or history, the indicator for the mode requested flashes for 15 seconds and then goes out.