Chevrolet Impala transmission shimmy and hard shift issue reported commonly among models on Chevrolet Impala

Some Chevrolet Impala owners report experiencing transmission issues, including shimmy and hard shifts, which can affect the vehicle's performance. These problems are documented in various Technical Service Bulletins (TSBs) related to harsh shifting and slipping gears. While the 2006 model is noted as particularly problematic, owners of 2007, 2010, and 2011 models should also be vigilant for similar issues. Repair costs for these transmission problems can average around $2,300 and often arise around 98,000 miles. Additionally, some owners have reported transmission fluid leaks as a common cause of these issues across model years up to 2015. It is crucial for Chevrolet Impala owners to monitor their vehicles for any signs of transmission trouble and seek prompt resolution to ensure reliability and performance.