Cadillac DTS gear shift button issue preventing startup or shifting to park on Cadillac DTS

Some Cadillac DTS owners report experiencing issues with the gear shift button that prevent startup or shifting to park, which may be attributed to several underlying causes. These issues could stem from a faulty wiring harness connected to the shifter or transmission control module (TCM), a defective shifter, or a malfunctioning solenoid. Additionally, problems with the shift linkage or cables, which connect the gear shift lever to the transmission, can also contribute to these gear shifting difficulties. Regular maintenance is essential to address these concerns, including inspecting and adjusting the gear shift cable as needed and replacing any faulty components. If these problems persist, it is advisable for owners to consult a professional mechanic or authorized service center for a thorough diagnosis and repair.