Installation Procedure

Position the fuel injection pump shaft (1) in order that the key on it fits to the groove (see arrow in picture) in the fuel injection pump driven sprocket (2).

Fig 1: Fuel Injection Pump Shaft
Courtesy of GENERAL MOTORS COMPANY
Install the fuel injection pump to the fuel injection pump bracket and the fuel injection pump driven sprocket (2).
Install the 3 nuts (1) and tighten to 25 N.m (18 lb ft).

Fig 2: Fuel Injection Pump Nuts
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .
Install the fuel injection pump driven sprocket nut (2) and tighten to 50 N.m (37 lb ft), use EN-6347 holder in conjunction with EN-956-1 extension to hold up.

Fig 3: Rotating Engine Until It Is Possible To Install Bolts
Courtesy of GENERAL MOTORS COMPANY
Remove the 2 bolts (1).
Connect the electrical connection (3).

Fig 4: Fuel Return Hose Clamp And Fuel Return Hose
Courtesy of GENERAL MOTORS COMPANY
Install the fuel return hose (2) in conjunction with the fuel return hose clamp (1).
Install the fuel injection fuel feed pipe. Refer to Fuel Injection Fuel Feed Pipe Installation .
Connect the fuel feed pipe at the fuel injection pump. Refer to Plastic Collar Quick Connect Fitting Service .
Install the diesel fuel separator. Refer to Diesel Fuel Separator Installation .
Install the fuel feed hose protector. Refer to Fuel Feed Hose Protector Installation .
Install the timing belt front cover. Refer to Timing Belt Front Cover Replacement .
Raise the vehicle.
Install the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
To deflate the fuel system, use the diagnostic tool to activate the low pressure pump for 60 seconds.
Lower the vehicle.