2009 Chevrolet Impala LT 6 Cyl 3.50L
What service & needed for a "Major Tune-Up on a 2009 Impala?
I was told I needed a major time up on 09 impala 3.5 Liter V6. What's performed and parts needed?
Your owners manual will detail different services at different mileage, that would be a good place to start. Most likely they mean replacing the spark plugs, possibly the coil packs, fuel filter, transmission filter, flushing the coolant system, and lubing the chassis in addition to an oil change.