Installation Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

If necessary, perform the following steps:
- Assemble the cylinder head. Refer to Cylinder Head Assemble .
- Install the exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation - Right .

Fig 1: View Of Right Cylinder Head Gasket

GM902817

Courtesy of GENERAL MOTORS CORP.

Install a NEW cylinder head gasket.

Fig 2: View Of Right Cylinder Head

GM902818

Courtesy of GENERAL MOTORS CORP.

Carefully install the cylinder head with the exhaust manifold to the engine. Refer to Cylinder Head Removal - Right .

Fig 3: Identifying Wiring Harness Conduit Upper Bolt

GM1394035

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the wiring harness conduit to the cylinder head.
Tighten: Tighten the wiring harness upper bolt to 10 N.m (89 lb in).

Fig 4: Locating Wiring Harness Ground At Front Of Cylinder Head

GM1394036

Courtesy of GENERAL MOTORS CORP.

Install the wiring harness ground to the front of the cylinder head.
Tighten: Tighten the cylinder head front ground bolt to 10 N.m (89 lb in).

Fig 5: Wiring Harness Ground At Rear Of Cylinder Head

GM1394072

Courtesy of GENERAL MOTORS CORP.

Install the wiring harness ground to the rear of the cylinder head.
Tighten: Tighten the cylinder head rear ground bolt to 10 N.m (89 lb in).
Install the right bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Right .
Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement (RPOs L26/L32) or Exhaust Crossover Pipe Replacement (RPO LY7) in Engine Exhaust.
Install the assembled powertrain module to the vehicle. Refer to Engine Replacement .
Install the lower intake manifold. Refer to Intake Manifold Replacement - Lower .