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.
2001 Chevrolet Prizm Base, StandardFACTORY OEM SERVICE PROCEDURE
Commutator Test
- Disassemble starter. Using "V" blocks and dial indicator, check commutator runout (out-of-round). Replace armature if runout is not within specifications. See STARTER SPECIFICATIONS .
- Check commutator diameter. If commutator is less than specification, replace armature. See STARTER SPECIFICATIONS .
- Using an ohmmeter, measure resistance between commutator segments. If resistance is greater than 5 ohms at any test point, an open circuit exists in commutator. Replace armature.
- Clean commutator segment surfaces with No. 400 grit sandpaper (if necessary). If surface is scored, out-of-round, or pitted, replace armature.
- Measure depth between commutator segments. If depth is not within specification, replace armature. See STARTER SPECIFICATIONS .
Factory Service Tools
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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.