K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
19. Disconnect the PCV hose from the upper valve rocker arm cover.
20. Remove the fuel injector pipes.
21. Remove the 11 bolts retaining the upper valve rocker arm cover.
Important: The valve rocker arm cover uses sealer. Pry only at the locations shown. Avoid damage to the sealing surfaces.
22. Using a gasket scraper or other suitable tool at the prying locations, loosen the upper valve rocker arm cover.
23. Remove the upper valve rocker arm cover.
