Contaminated brake fluid can cause problems in the brake system and it should be flushed every 60,000 miles.
Resources for the Repair and Maintenance of your 2009 Chevrolet Impala SS
2009 Chevrolet Impala SS
2009 Chevrolet Impala SS Problems
Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.
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You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.
A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
2009 Chevrolet Impala SS Questions and Answers
a dealer has tried to tell me that i had to have my fuel rails and injectors cleaned every 25,000 mi.at a cost of 100.00, is this another scam