Buick Park Avenue transmission issues with inability to shift into drive or first gear on Buick Park Avenue

Some Buick Park Avenue owners report experiencing transmission issues that prevent them from shifting into drive or first gear. Common problems include erratic shifting caused by a malfunctioning transmission pressure control solenoid, which can lead to difficulties in shifting into overdrive. Additionally, low transmission fluid levels are noted as a potential cause for the transmission failing to shift out of second gear, which can be easily resolved by checking and adjusting the fluid level. Some owners have also reported various transmission failures characterized by hard shifting, delays, and vibrations during gear changes. In cases where the transmission pressure control solenoid fails, partial disassembly of the transmission may be necessary for replacement, affecting certain model years. Overall, transmission problems have been identified across various Buick models, making it essential for owners to consult a qualified mechanic or dealership to diagnose and address these issues promptly.