Water Pump

[super white alero1]

That my friend cliff would be correct. I would advise if doing the water pump then spend the additional $200.00 on the timing chain kit. which comes with the timing gear, chain guides and tensioner. You might not need all that but better than doing it all over again.

[Oldsman]

GM recommends if you remove the chain to replace it even if there is no wear. the whole fact that the chain stretches and being how the tensioner is basically preset if you remove old chain and put it back on the tension could not be the same.

let me ask you this, 2000. would pull a motor completely apart and if the rings and bearing looked ok would you reassemble back together using the old parts????????

[PFC2]

if it is just your light that is turning on and you have no leaks replace the coolant bottle, but if you do have a leak it is most likely the internal seal on the waterpump. if your mechanic said it was leaking did he show you or did you ask to see the leak he might be saying that to get some work. if it is the waterpump its not any easy job i did mine two months ago myself. you have to make sure timing doesnt jump that you seat the gaskets properly espiacally the timing chain cover gasket if you dont you wont have a coolant but an oil leak i ran into that problem also i would replace the tensioner, chain, and guides. i paid about $300 for everything waterpump, gasket kit from gm dealer, and new chain, tensioner, and guides