MALFUNCTIONS Which May Cause a Blinking PRNDL
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Failure to detect turbine speed pull-down during a shift may occur under the following conditions:
- A clutch is failed and the transmission cannot attain the requested range.
- Invalid gear ratio
- Pressure control solenoid failure
- Turbine or output speed sensor failure
- Lack of pressure at startup