Conditions For Setting The DTC
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC will set under one of the following conditions:
- The transfer case switch indicates high range, and the calculated range is low range for 5 seconds or more.
- The transfer case switch indicates low range, and the calculated range is high range for 5 seconds or more.