Removal Procedure

Fig 1: Identifying Charge Air System Hoses, Ducts And Bolts

Courtesy of GENERAL MOTORS CORP.

CAUTION: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

Remove the engine cover. Refer to Engine Cover Replacement .
Remove the charge air system pipes. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .

Fig 2: View Of Fuel Pipe-To-Injector Nut Tightening Procedure

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: To avoid fuel spillage or damage to the injector pipe connector, hold the injector pipe connector using tools and unscrew the pipe nut. And then, put a cap on the injector connector to avoid contamination from dust as soon as the fuel pipes are removed.

Hold the injector pipe connector with a wrench (1) and unscrew the fuel pipe-to-injector nut (M14).

Fig 3: View Of Fuel Pipe-To-Common Rail Nut Tightening Procedure

Courtesy of GENERAL MOTORS CORP.

Hold the injection pump pipe connector with a wrench (1) and unscrew the fuel pipe-to-common rail nut (M14).

Fig 4: View Of Fuel Pipe-To-Common Rail And Retaining Bolt

Courtesy of GENERAL MOTORS CORP.

Unscrew the fuel pipe-to-common rail nut (M17) and the fuel pipe-to-injector nuts (M17).
Remove the fuel pipe-to-common rail retaining bolt from the thermostat housing.

IMPORTANT: Put a cap on the common rail pipe threads to avoid contamination from dust as soon as the pipes are removed.

Remove the fuel pipe-to-common rail and the fuel pipe-to-injector pipes.