GM Service Manual Online
For 1990-2009 cars only

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Testing

  1. Start the engine. Verify the noise can be heard. Compare the concern to a similar vehicle.
  2. Remove the starter.
  3. Inspect the flywheel for the following:
  4. • Loose flywheel bolts
    • Chipped gear teeth
    • Missing gear teeth
    • Bent flywheel
    ⇒If not within specifications, tighten the flywheel bolts or replace the flywheel.
    ⇒If all inspections were within specification, replace the starter motor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Fastener Tightening Specifications 2.2L (L61)
    •  Engine Flywheel Replacement 2.2L (L61)
    •  Fastener Tightening Specifications 2.4L (LE5)
    •  Engine Flywheel Replacement 2.4L (LE5)
    •  Starter Motor Replacement