C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
Note the location of any wire harness clips.
Important: The upper valve rocker arm cover uses sealer. Pry only at the locations shown. Avoid damage to the sealing surfaces.
16. Using a gasket scraper or other suitable tool at the prying locations, loosen the upper valve rocker arm cover.
17. Remove the upper valve rocker arm cover.
18. If replacing the upper valve rocker arm cover, remove the grommets for the injector line fittings.
19. If replacing the upper valve rocker arm cover remove the screws, PCV diaphragm, and spring.
20. Inspect the PCV diaphragm for damage.
21. Replace the PCV diaphragm if damage is found.
22. Clean the sealer from the sealing surfaces on the upper valve rocker arm cover and the lower valve rocker arm cover.
23. Clean the upper valve rocker arm cover in suitable cleaning solvent.
24. Inspect for cracking and other damage on the upper valve rocker arm cover.