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 MANUALSCHEVROLET2003MALIBU V6-3.1L VIN JREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEINTAKE MANIFOLD
2003 Chevrolet Malibu V6-3.1L VIN J
Intake Manifold
2003 Chevrolet Malibu V6-3.1L VIN JSECTION Intake Manifold
Throttle Body Bolt/Stud 25 Nm (18 ft. lbs.)
Upper Intake Manifold Bolt 25 Nm (18 ft. lbs.)
Lower Intake Manifold Bolt
^ Install NEW lower intake manifold bolts.
Tighten
A. Tighten the lower intake manifold bolts in sequence to 7 Nm (62 in. lbs) on the first pass.
B. Tighten the lower intake manifold bolts (1,2,3,4) in sequence to 13 Nm (115 in. lbs) on the final pass.
C. Tighten the lower intake manifold bolts (5,6,7,8) in sequence to 25 Nm (18 ft. lbs) on the final pass.
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.