What type of antifreeze does the 2004 chevy impala use?

The 2004Chevrolet Impala is not a picky machine when it comes to engine coolant, so long as You flush the entire system before filling it. This is because the worst thing You can do is mix different types of antifreeze -- they can react with each other and form a jello-like substance that will absolutely tear Your engine apart. Many drivers report using Dex-Cool with the '04 Impala, though others recommend against it, citing a preference for a green coolant. At the end of the day, what You choose doesn't matter much, so long as it's not being mixed. If You know what's in Your machine, top it off with that. If You don't (maybe You bought it preowned and can't identify color), best to do a flush and fill.