How do you change timing chain on 2001 cavalier?

2001 chevy cavalier 2.2L VIN-4 If chain broke or jumped: Remove right front tire and fender skirt. Remove serpentine belt and belt tensioner. Remove crank pulley and pull off pulley mount from crank. Remove the 10 mm bolts around timing chain cover remove two bottom studs on cover that pass threw oil pan use the two nuts on them as jam nuts on the studs. Studs must be removed. Carefully pry off cover. Remove cam shaft pulley remove chain, reinstall pulley(without chain) and turn cam shaft until cam shaft mark points to center of tensioner bracket. (I removed valve cover to make sure the two push rods for #1 cyl.were relaxed (They turned with two fingers). Turn crank place #1 cyl. t.d.c with crank. timing mark pointing @ center of the chain tensioner bracket.The mark is on the crank pulley a small circle on the gear, the keyway for the gear will be at the 12 o'clock posisition. Remove cam pulley again place new chain over crank gear while sliding cam pulley back on. Tighten cam pulley insure both gear marks still are aligned with bracket center and each other .Connect battery Test run for 5 sec. with covers off.Disconnect battery when engine starts and sounds normal. Now put everything back together.Go to http://www.jasperengines.com/pdf/GM2.2TimingTB.pdf to see timing marks and alignment.