Conditions for Setting the DTC
WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
One of the following conditions occur:
- The four-wheel drive low circuit is closed, grounded, for greater 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.