Installation Procedure

WARNING: This page is about a different variant/trim than selected.

Install the valve rocker arm cover gasket.
Install the upper valve rocker arm cover.

Fig 1: View Of Upper Valve Rocker Arm Cover & Gasket
Courtesy of GENERAL MOTORS CORP.
Install the upper valve rocker arm cover bolts.

NOTE: Refer to Fastener Notice .

Fig 2: Identifying Upper Valve Rocker Arm Cover Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

Tighten the upper valve rocker arm cover bolts in the sequence shown.
Tighten: Tighten the bolts to 8 N.m (71 lb in).

NOTE: Ensure proper torquing of the fuel injector line. An under-torqued fuel injector line will not seal properly and an over-torqued fuel injector line may damage the fuel injector fitting. An improperly sealed or damaged fuel injector line or fuel injector fitting will cause a fuel leak.

Fig 3: View Of Left Fuel Injector Pipes

Courtesy of GENERAL MOTORS CORP.

Install the left fuel injector pipes.
Tighten: Tighten the pipes to 41 N.m (30 lb ft).
After installing the fuel injector pipes, clean the injector pipes and apply sealant GM P/N 97720043, at the fittings to prevent moisture and debris from collecting between the line and fitting.
Install the water outlet tube. Refer to Water Outlet Tube Replacement (6.6L (LLY) Engine) .
Install the auxiliary generator, if equipped. Refer to Generator Replacement - Auxiliary (6.6L (LLY) Engine) .
Install the PCV hose/pipe. Refer to Crankcase Ventilation Hoses/Pipes Replacement .
Install the main electrical connector harness bracket.

Fig 4: View Of Main Electrical Connector Harness Bracket & Bolts
Courtesy of GENERAL MOTORS CORP.
Install the main electrical connector harness bracket bolts.
Tighten: Tighten the bolts to 21 N.m (15 lb ft).
Install the main engine electrical harness connector hold down bolts.

Fig 5: View Of Main Engine Electrical Harness Connector Bolts
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the bolts to 10 N.m (89 lb in).
Connect the main engine electrical harness connectors.
Push down on the latches (1) in order to connect the connectors.

Fig 6: View Of Main Engine Electrical Harness Connector Latches & Harness Clip
Courtesy of GENERAL MOTORS CORP.
Close the harness clip (2).
Connect the fuel lines. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
Install the fuel hose bracket nut.

Fig 7: View Of Fuel Line Bracket & Nut
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the nut to 21 N.m (15 lb ft).
Position the generator positive cable.
Install the generator positive cable in the clip on the engine front cover.
Install the generator positive cable and nut.
Tighten: Tighten the nut to 9 N.m (80 lb in).
Install the positive battery cable junction block bracket and bolt (1) to the power steering pump.

Fig 8: View Of Battery Cable Junction Block Bolt At Power Steering Pump Bracket
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the bolt to 9 N.m (80 lb in).
Remove the tape from the turbocharger openings.
IMPORTANT: Lubricate the end of the duct prior to installation.
Install the charged air cooler inlet duct connector (4) to the turbocharger.

Fig 9: View Of Turbocharger Clamp & Charged Air Cooler Inlet Duct Connector
Courtesy of GENERAL MOTORS CORP.
Tighten the charged air cooler inlet duct connector to turbocharger clamp (1).
Tighten: Tighten the clamp to 6 N.m (53 lb in).
Fill the cooling system. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) .
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) .
Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .