Diagnostic Aids
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure conditions. An auxiliary transmission fluid pump producing low output pressure may cause a clutch slip condition. The Aux. Trans. Fluid Pump Actual parameter should be within 25 percent of the Aux. Trans. Fluid Pump Commanded parameter. Ensure the transmission fluid level is correct and there are no leaks. If there are any other transmission DTCs set, diagnose those first.