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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System & Fuel System - 6.6L (LLY) - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Pressure Regulator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of A/C Compressor & Bolts
    GM652573Courtesy of GENERAL MOTORS CORP.
  1. Remove the air outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the air intake pipe.
    3. Fig 2: Identifying Fuel Pressure Regulator Electrical Connector
    GM786996Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the fuel pressure regulator electrical connector (1).
  4. Reposition the distribution block hose clamps.
  5. Remove the distribution block hoses from the distribution block.
    6. Fig 3: Identifying Fuel Pressure Regulator Screws
    GM901300Courtesy of GENERAL MOTORS CORP.
  6. 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.
  7. Using compressed air, thoroughly blow dry the regulator and pump.
  8. Remove the 3 fuel pressure regulator screws (1) using a T25 TORX®.
    9. Fig 4: View Of Fuel Pressure Regulator
    GM901301Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel pressure regulator (1).
  10. 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.
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