GM Service Manual Online
For 1990-2009 cars only

Generator noise may be caused by the following conditions:

    • A loose drive belt.
    • Loose mounting bolts.
    • A loose or poor fitting terminal.
    • A faulty component inside the generator.

Replace the generator if the drive belt and the mounting bolts are snug and there is still excessive generator noise. Refer to Generator Replacement.

Do not disassemble the generator. Separating the two end frames will damage the slip ring end frame bearing. CS-130 generator is serviceable by complete replacement only.