Removal Procedure

Remove the timing belt front cover. Refer to Timing Belt Front Cover Replacement .
Remove the fuel feed hose protector. Refer to Fuel Feed Hose Protector Removal .
Remove the fuel injection fuel feed pipe. Refer to Fuel Injection Fuel Feed Pipe Removal .
Reposition the diesel fuel separator without disconnecting the hoses from the separator. Refer to Diesel Fuel Separator Removal .
Disconnect the fuel feed pipe at the fuel injection pump. Refer to Plastic Collar Quick Connect Fitting Service .

Fig 1: Fuel Return Hose Clamp And Fuel Return Hose

Courtesy of GENERAL MOTORS COMPANY

Remove the fuel return hose clamp (1) and the fuel return hose (2) from the fuel pump.
Disconnect the electrical connection (3).
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
Lower the vehicle.

Fig 2: Rotating Engine Until It Is Possible To Install Bolts

Courtesy of GENERAL MOTORS COMPANY

NOTE:

When affixing the pulley, use two hex socket head bolts M6 X 40 (30 mm unthread and 10 mm thread). The bolt must be tightened the whole length of the thread. This way the pulley is prevented from moving out of position.

NOTE:

Rotate the engine only on crankshaft sprocket bolt and clockwise.

Fix the fuel injection pump driven sprocket.
- Rotate the engine until it is possible to install the 2 bolts (1).
- Install the 2 bolts (1).
Remove the fuel injection pump driven sprocket nut (2) use EN-6347 holder in conjunction with EN-956-1 extension to hold up.

Fig 3: Fuel Injection Pump Nuts

Courtesy of GENERAL MOTORS COMPANY

Remove the 3 fuel injection pump nuts (1).

Fig 4: Fuel Injection Pump

Courtesy of GENERAL MOTORS COMPANY

Remove the fuel injection pump.
- Pressing out the fuel injection pump shaft from the pump driven sprocket, use EN-46790 remover (1) and counter hold with a wrench (2).
- Remove the fuel injection pump.