Installation Procedure

Fig 1: View Of Fuel Pipe-To-Common Rail And Retaining Bolt

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not reuse the fuel pipes. If reused, the contaminated pipes may damage the injectors or cause leak from the pipes.

Clean the common rail pipe threads, if contaminated.
Loosen the injector bracket bolts.
Install the fuel pipes and tighten the nuts by hand between the injectors and the common rail.

NOTE: Refer to Fastener Notice .

Install the injector bracket bolt.
Tighten: Tighten the injector bracket bolt to 28 N.m (20.7 lb ft) .

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

Courtesy of GENERAL MOTORS CORP.

Hold the injector pipe connector with a wrench (1) and tighten the fuel pipe-to-injector nut (M14).
Tighten: Tighten the fuel pipe-to-injector nut (M14) to 27 N.m (19.9 lb ft) .
Tighten the fuel pipe-to-injector nut (M17).
Tighten: Tighten the fuel pipe-to-injector nut (M17) to 20 N.m (14.8 lb ft) .

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

Courtesy of GENERAL MOTORS CORP.

Install the fuel pipe and tighten the nuts by hand between the common rail and the injection pump.
Hold the injection pump pipe connector with a wrench (1) and tighten the fuel pipe-to-common rail nut (M14).
Tighten: Tighten the fuel pipe-to-common rail nut (M14) to 20 N.m (14.8 lb ft) .
Tighten the fuel pipe-to-common rail nut (M17).
Tighten: Tighten the fuel pipe-to-common rail nut (M17) to 20 N.m (14.8 lb ft) .