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. Inspect the starter motor mounting bolts for proper torque refer to Fastener Tightening Specifications
  2. Remove the starter motor.
  3. Inspect the flywheel for the following:
  4. • Loose flywheel bolts
    • Chipped gear teeth
    • Missing gear teeth
    • Bent flywheel
    If not within specifications, secure 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
    •  Engine Flywheel Replacement
    •  Starter Motor Replacement