July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Removal Procedure

Fig 1: Fuel Pressure Regulator Electrical Connector
Courtesy of GENERAL MOTORS CORP.

Remove the center intake manifold. Refer to Center Intake Manifold Replacement (LMM) .
Disconnect the fuel pressure regulator electrical connector (1).
Reposition the distribution block hose clamps.
Remove the distribution block hoses from the distribution block.

Fig 2: Fuel Pressure Regulator Screws

GM901300

Courtesy of GENERAL MOTORS CORP.

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.
Using compressed air, thoroughly blow dry the regulator and pump.
Remove the 3 fuel pressure regulator screws (1) using a T25 TORX®.

Fig 3: Fuel Pressure Regulator

GM901301

Courtesy of GENERAL MOTORS CORP.

Remove the fuel pressure regulator (1).
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.