Chevrolet Malibu shift to park error preventing start and acceleration issues, multiple engineers unable to identify cause on Chevrolet Malibu

Some Chevrolet Malibu owners report experiencing a "Shift to Park" error that prevents the vehicle from starting and causes acceleration issues. This frustrating problem is often attributed to a malfunctioning park switch within the shifter assembly, which has been identified as a common cause by GM TechLink. Additionally, a faulty shifter switch in the transmission shifter, which is activated when the shifter is in the P position, may also trigger this error message. Owners have also reported issues with a defective or corroded switch inside the shifter that fails to confirm the park shift to the Body Control Module (BCM). To address these concerns, GM has issued a fix aimed at correcting the underlying causes of the intermittent "Shift to Park" problem. In cases where the specific cause remains elusive, it may be helpful for owners to consider these common issues and potential solutions to effectively troubleshoot and resolve the "Shift to Park" error.