GM Service Manual Online
For 1990-2009 cars only

Generator noise may be caused by the following conditions:

    â€¢ A loose drive belt
    â€¢ Loose mounting bolts
    â€¢ A loose or poor fitting terminal
    â€¢ 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.