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 EXHAUSTENGINETIMING COMPONENTSSPECIFICATIONS
2009 Chevrolet Impala V6-3.9L
Timing Components: Specifications
2009 Chevrolet Impala V6-3.9LSECTION Specifications
TIMING CHAIN TENSIONER
Tensioner Bolts 21 Nm (15 lb ft)
ENGINE FRONT COVER (TIMING COVER)
Engine front cover bolts 25 Nm (18 lb ft)
CRANKSHAFT PULLEY
Crankshaft balancer bolt
first pass 125 Nm (92 lb ft)
final pass 130 degrees
Tensioner Bolts 21 Nm (15 lb ft)
ENGINE FRONT COVER (TIMING COVER)
Engine front cover bolts 25 Nm (18 lb ft)
CRANKSHAFT PULLEY
Crankshaft balancer bolt
first pass 125 Nm (92 lb ft)
final pass 130 degrees
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.