How do you set timing chain on 2001 Oldsmobile aurora?

To set the timing chain on a 2001 Oldsmobile Aurora, first ensure the engine is at top dead center (TDC) on the compression stroke for cylinder one. Align the timing marks on the crankshaft and camshaft gears according to the service manual specifications. After positioning the chain, check that the tensioner is properly installed and functioning. Finally, rotate the engine by hand to confirm that everything is in alignment before reassembling the components.