Yukon/Denali XL 1500 4WD V8-5.3L VIN T (2004)
9. Remove the ignition coil bracket studs.
10. Remove the ignition coil bracket.
11. Remove the Positive Crankcase Ventilation (PCV) hose.
12. Loosen the valve rocker arm cover bolts.
13. Remove the valve rocker arm cover.