GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2009
🢒
STS
🢒
Engine
🢒
Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L
🢒 Intake Manifold Installation
Intake Manifold Installation LLT
Install the NEW intake manifold gasket.
Install the intake manifold assembly.
Install the intake manifold bolts.
Caution:
Refer to
Fastener Caution
in the Preface section.
Tighten the intake manifold bolts in the sequence shown.
4.1.
Tighten the intake manifold bolts in sequence to
23 N·m (17 lb ft)
.
4.2.
Tighten the intake manifold bolts a second pass in sequence to
23 N·m (17 lb ft)
.
Place the intake manifold brace to the engine front cover and intake manifold.
Loosely install the bolts.
First tighten the intake manifold brace bolt (1) to the intake manifold and tighten to
10 N·m (89 lb in)
.
Finally tighten the intake manifold brace bolt (2) to the engine front cover and tighten to
65 N·m (48 lb ft)
.
Install the evaporative (EVAP) solenoid.
Install the EVAP solenoid bolt and tighten to
10 N·m (89 lb in)
Connect the EVAP hose to the upper intake manifold and EVAP solenoid.
Connect the positive crankcase ventilation (PCV) tube assembly to the upper intake manifold and the right camshaft cover.
Install the PCV tube assembly bracket bolts and tighten to
10 N·m (89 lb in)
.
Install the brake booster hose to the upper intake manifold.