Diagnostic Aids
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. 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.