The 2005 cadillac deville is equipped with a timing chain. unlike a belt, which requires routine replacement, a chain is designed to last the life of the vehicle. however, there are exceptions. this part is quite similar to a bicycle chain. if you can picture how the chain moves while the bike is in motion, it interacts with other components. without the chain, the bike won't work. in a vehicle, the timing chain sync-hronizes the camshaft and crankshaft sprockets. these control the opening and closing of intake and exhaust valves. so, if it gets loose or breaks, expensive engine damage can be resulted. a worn one will usually cause a slapping noise that you can especially hear when you firststart the engine. you may also notice the engine hesitating, stalling, or running rough. in most cases, a rattling sound will be present from pieces breaking off and landing in the oil drain pan, as well.
The 2005 cadillac deville uses a timing chain.