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 DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSBRAKES AND TRACTION CONTROLDISC BRAKE SYSTEMBRAKE ROTOR/DISC
2009 Chevrolet Impala V6-3.9L
Brake Rotor/Disc
2009 Chevrolet Impala V6-3.9LSECTION Brake Rotor/Disc
FRONT BRAKE ROTOR/DISC
Minimum Thickness 29.0 mm (1.142 in)
Discard Thickness 28.6 mm (1.126 in)
Thickness Variation 0.025 mm (0.001 in)
Runout 0.06 mm (0.002 in)
REAR BRAKE ROTOR/DISC
Minimum Thickness 9.35 mm (0.368 in)
Discard Thickness 9.0 mm (0.354 in)
Thickness Variation 0.025 mm (0.001 in)
Runout 0.06 mm (0.002 in)
Minimum Thickness 29.0 mm (1.142 in)
Discard Thickness 28.6 mm (1.126 in)
Thickness Variation 0.025 mm (0.001 in)
Runout 0.06 mm (0.002 in)
REAR BRAKE ROTOR/DISC
Minimum Thickness 9.35 mm (0.368 in)
Discard Thickness 9.0 mm (0.354 in)
Thickness Variation 0.025 mm (0.001 in)
Runout 0.06 mm (0.002 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.