2002 Oldsmobile Alero Q&A

2002 Oldsmobile Alero Question: how many timing chains does my car have

My car is making a kind of loud rattle or ticking noise when i crank it and while im driving and has been for a few weeks.I was told its my timing chain and that my car has two. What parts do i need to buy to fix this prolem? -
Answer 1
Yes it is the timing chain and yes it does require 2 chains, an upper and lower chain. I bought the timing chain kit and an extra chain $200. Labor will cost a lot of money. I was quoted as high as $460 but found a shop to do for $280. -
Comment 1
it is not an upper and lower it is the camshaft timing chain and a ballcance shaft chain. i just had a car with this problem a few weeks ago. it calls for about 5.2 hours on mitchell and was not that bad of a change. most likely you have a busted upper guide but dont be fooled into thinking you can chnge only that, if its broke you have a stretched chain.good luck -