How do you adjust the timing chain on a Pontiac Sunfire 2.2?

To adjust the timing chain on a Pontiac Sunfire 2.2, first ensure the engine is off and cool. Remove the timing chain cover to access the timing chain and gears. Align the timing marks on the crankshaft and camshaft sprockets to the specified positions, and if necessary, replace the tensioner or adjust it to ensure proper tension. Reassemble the cover and ensure all components are securely fastened before starting the engine.