2005 engine type

[taunop]

Hi guys,
I bought a malibu and was wondering what type of engine they have. I forgot the exact term but here is the explanation. If the timing belt is not installed appropriately, the pistons might hit the block and the engine is garbage. In another type of engine, the only problem is performance, the engine is not damaged. I hope my explanation was clear.

Another thing. Does this engine use timing chain or timing belt.

Thank you.