When should you do a transmission flush on 2008 Chevy Malibu?

The 2008 Chevy Malibu, like many modern vehicles, doesn't actually need a traditional transmission flush. The recommended maintenance for the transmission is a fluid and filter change. A flush uses a machine to force out much more of the old fluid, which can dislodge built-up deposits that might then clog the transmission's internal filters or valves. This can lead to more problems than it solves.

Therefore, instead of a flush, consult your owner's manual for the recommended service interval for your specific 2008 Chevy Malibu transmission fluid and filter change. This interval typically falls somewhere between 60,000 and 100,000 miles, but it can vary depending on driving conditions and the type of transmission (automatic or manual; specific model of automatic).

In short: Don't get a transmission flush. Get a fluid and filter change at the intervals specified in your owner's manual. If you're experiencing transmission problems (slipping, harsh shifting, etc.), have a mechanic inspect the transmission *before* performing any fluid changes – a fluid change won't fix major internal transmission problems.