SERVICE INFORMATION
IMPORTANT:The VIN breakpoints were no longer needed because the new dual-mass flywheel will benefit all applications through model year 2005. To improve high mileage durability related to the issue outlined in this bulletin, a new Dual-Mass Flywheel, P/N 24238864, was released with the same balance characteristics as the pre-2006 flywheel, with 12 rivets instead of six.
CONDITION
Some customers may comment on a bearing growl or rattle-type noise while depressing or releasing the clutch pedal. Some customers may comment on excessive shifter or engine vibration. In some cases, the excessive vibration may result in an injector balance rate fluctuation condition.
CAUSE
The steel clutch thrust washer may wear down the flywheel bushing prematurely, causing an excessive vibration condition.
DIAGNOSTIC TIPS
The bearing growl/rattle-type noise and or vibration is eliminated with the clutch fully engaged or disengaged.
CORRECTION
Replace the flywheel assembly with a Dual-Mass Flywheel,P/N 24238864 . Refer to the applicable SI procedure below.
IMPORTANT:The eight flywheel mounting bolts, P/N 97226124, must be replaced when service requires removal or replacement of the flywheel.
- Engine Mechanical – 6.6L (LB7) – Engine Flywheel Replacement – Manual Transmission.
- Engine Mechanical – 6.6L (LLY) – Engine Flywheel Replacement – Manual Transmission.
