GM Service Manual Online
For 1990-2009 cars only

Checks

Causes

DEFINITION: A final drive noise or hum that is most noticeable under light throttle acceleration or turns on deceleration

    • Differential Carrier
    • Differential Side Gears
    • Gears worn or pitted
    • Thrust washer damage
    • Final Drive Gear Set
    • Final Drive Internal Gear
    • Worn, planet pinions or washers
    • Worn, tooth damage