GM Service Manual Online
For 1990-2009 cars only

Noise in All Ranges

Checks

Action

DEFINITION: A whine which may be RPM load sensitive or which ceases when the TCC engages

Torque Converter

Verify that the noise is internal to the torque converter by placing your left foot on the brake with the gear selector in Drive. Momentarily stall the engine. Torque converter noise increases under load.