Silverado 2500 4WD V8-6.6L DSL Turbo (2010)
8. Reposition the fuel hose clamp (3) at the fuel injection pump.
9. Remove the fuel hose (4) from the fuel injection fuel feed manifold and injection pump.
10. 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.
11. Using compressed air, thoroughly blow dry the regulator and pump.
12. Remove the 3 fuel pressure regulator screws (1) using a T25 TORX(R).
13. Remove the fuel pressure regulator (2).
14. If dirt or debris is found in the bore or seating surfaces of the fuel injection pump, perform the following:
*
Place a clean rag over the bore on order to collect the excess fuel.
*
Bump the engine over in order to flush any debris out of the regulator bore.
Installation Procedure
Note: If the pressure regulator is being re-used, check the O-rings for damage. If the O-rings are damaged, install NEW O-rings.
