GM Service Manual Online
For 1990-2009 cars only

Cause

Action

DEFINITION: Vibration from the clutch components during disengagement or engagement.

Review the Symptoms - Clutch and perform the necessary inspections.

Excessive driveline torsional activity

Review the Vibration Analysis - Driveline.

Clutch incorrectly installed

Remove the clutch and install it correctly. Refer to Clutch Pressure and Driven Plate Replacement .

Pilot bearing worn or damaged

  1. Replace the pilot bearing. Refer to Clutch Pilot Bearing Replacement .
  2. Inspect the input shaft pilot bearing journal for wear or damage.
  3. Replace the transmission if the input shaft is damaged or worn. Refer to Transmission Replacement .

Transmission input splines worn or damaged

  1. Inspect the clutch disc to input splines for wear or damage.
  2. Replace the transmission if the input shaft splines are excessively worn. Refer to Transmission Replacement .

Clutch disc facings damaged

Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement .

Flywheel housing to clutch housing excessively misaligned

Replace the faulty clutch housing or transmission. Refer to Transmission Replacement .

Clutch out of balance

Replace the clutch assembly. Refer to Clutch Pressure and Driven Plate Replacement .