Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009IMPALA V6-3.9LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINEINTAKE MANIFOLDSPECIFICATIONS
2009 Chevrolet Impala V6-3.9L
Intake Manifold: Specifications
2009 Chevrolet Impala V6-3.9LSECTION Specifications
LOWER INTAKE MANIFOLD
Tighten the lower intake manifold bolts (1, 2, 3, 4, 5, 8, 6, 7, 8) in sequence to 7 N.m (62 lb in).
Tighten the center lower intake manifold bolts (1, 2, 3, 4) in sequence to 16 N.m (12 lb ft).
Tighten the visable corner lower intake manifold bolts (5, 8) to 25 N.m (18 lb ft).
Tighten the hidden corner lower intake manifold bolts (6, 7) to 25 N.m (18 lb ft).
Upper Intake Manifold Bolt/Stud 25 Nm (18 lb ft)
THROTTLE BODY
Throttle Body Bolts 10 Nm (89 lb in)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.