Diagnostic Aids
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Low pump pressure and a slipping transmission may cause DTC P2771 to set.
- Transfer case ratio is calculated by dividing the ISS by the OSS.