C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
19. Remove the positive crankcase ventilation (PCV) hose from both valve covers.
20. Reposition the injection pump inlet clamp.
21. Remove the injection pump inlet hose from the fuel feed distribution (leak-off) block. Reposition the hose.
22. Clean the fuel pressure regulator and high pressure injection pump thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N 10953463)
or equivalent.
23. Using compressed air, thoroughly blow dry the regulator and pump.
24. Remove the 3 fuel pressure regulator screws (1) using a T25 TORX.
