Whine/Growl Noise That Changes with Vehicle Speed

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

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 Link and Sprockets Assemble in the Transmission Unit Repair Manual drive and driven sprockets for nicks, broken teeth or scoring, refer to Drive Link and Sprockets Assemble in the Transmission Unit Repair Manual driven sprocket support and bearings for nicks or rough surfaces, refer to Driven Sprocket Support Assemble in the Transmission Unit Repair Manual drive sprocket support for nicks or rough surfaces, refer to Drive Sprocket Support and Seal Replacement in the Transmission Unit Repair Manual

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 Link and Sprockets Assemble in the Transmission Unit Repair Manual
drive and driven sprockets for nicks, broken teeth or scoring, refer to Drive Link and Sprockets Assemble in the Transmission Unit Repair Manual
driven sprocket support and bearings for nicks or rough surfaces, refer to Driven Sprocket Support Assemble in the Transmission Unit Repair Manual
drive sprocket support for nicks or rough surfaces, refer to Drive Sprocket Support and Seal Replacement in the Transmission Unit Repair Manual