DTC Descriptors (Communication Interface Module)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 GMC Yukon XL, 2009 GMC Yukon, 2009 Chevrolet Tahoe, 2009 Chevrolet Suburban, and 2009 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.