Whine/Growl Noise That Changes with Vehicle Speed. Buick Lucerne 2006

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2006 🢒 Lucerne 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Whine/Growl Noise That Changes with Vehicle Speed

Checks

Action

DEFINITION: A whine or growl that increases and fades with vehicle speed and is most noticeable under light acceleration

Drive Link Assembly System

Verify noise from sprockets and/or drive link assembly chain by placing your left foot on the brake and moving the gear selector from Park to Reverse. If the noise stops, check items below:

•	drive link assembly for stretch, refer to Drive Sprocket, Driven Sprocket, and Drive Link and Assemble

•	drive and driven sprockets for nicks, broken teeth or scoring, refer to Drive Sprocket, Driven Sprocket, and Drive Link and Assemble

•	driven sprocket support and bearings for nicks or rough surfaces, refer to Driven Sprocket Support Assemble

•	drive sprocket support for nicks or rough surfaces, refer to Drive Sprocket Support and Seal Replacement