Conditions for Setting the DTC
WARNING: This page is about a different car, the 2003 GMC Yukon XL, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
All conditions for running the DTC are met, and one of the following conditions occur:
- The four-wheel drive low circuit is closed, grounded, for more than 7 seconds with a transfer case ratio of 0.95-1.05:1, for 1 occurrence.
- The four-wheel drive low circuit is open for 2 seconds, with a transfer case ratio of 2.65-2.76:1 in two different commanded gears for 2 occurrences.