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The main issue with the transmission in a 2008 Chevrolet Impala SS is often due to a faulty transmission pressure control solenoid, leading to rough and unpredictable gear shifts. To identify if this is the issue, check for diagnostic trouble codes like P0748, P0776, P0796, or P0961-P0971. The good news is that you can replace the solenoid yourself for a cost ranging from $25 to $60, but keep in mind additional labor costs if you choose to have a mechanic do it. Another common problem causing harsh shifting is overheating or low transmission fluid levels, with the latter typically causing the former. To prevent these issues, it's recommended to replace the transmission fluid every 30,000 to 60,000 miles and regularly check the fluid levels in between. Ignoring low fluid levels can lead to more costly problems, so staying proactive is key to avoiding major repairs.
Something inside suddenly burst, causing it to become immobilized and unresponsive.
Issues with the transmission of the 2008 Chevy Impala SS involve difficulties with shifting gears and gears slipping.