Removal Procedure
- Remove the upper intake manifold. Refer to
Intake Manifold Replacement
.
- Remove the valve rocker arms and the pushrods. Refer to Valve
Rocker Arm and Pushrod Replacement.
- Remove the lower intake manifold. Refer to
Intake Manifold Replacement
.
- Remove the valve lifter guide bolts.
- Remove the valve lifter guide.
- Remove the valve lifters.
Installation Procedure
- Coat the valve lifters with prelube, GM P/N 12345501
or equivalent.
- Install the valve lifters.
- Install the valve lifter guide.
- Install the valve lifter guide bolts.
Tighten
Tighten the guide bolts to 30 N·m (22 lb ft).
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the lower intake manifold. Refer to
Intake Manifold Replacement
.
- Install the valve rocker arms and pushrods. Refer to Valve Rocker
Arm and Pushrod Replacement.
- Install the upper intake manifold. Refer to
Intake Manifold Replacement
.