Blinking PRNDL
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Malfunctions which may cause a blinking PRNDL are as follows:
- Failure to detect turbine speed pull-down during a shift. This may occur, for example, when a clutch is failed and the transmission cannot attain the requested range.
- Invalid gear ratio.
- Misadjusted PNP switch or gearshift lever linkage.
- Solenoid "A" or "B" failure.
- Turbine or output speed sensor failure.
- Lack of pressure at start-up.