Conditions For Setting DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1998 GMC Yukon, 1998 GMC Suburban, 1998 GMC Pickup, 1998 GMC Cab & Chassis, and 1998 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
System will set DTC when auto transfer case solenoid output is detected as a high voltage when low voltage is expected.
When this DTC is set, system will try to turn solenoid on (grounding the circuit). If system cannot energize solenoid, system will not attempt to energize solenoid again during that ignition cycle. All shifting will be disabled. SERVICE 4WD light will be on for remainder of current ignition cycle.