Whine/Growl Noise That Changes with Vehicle Speed. Pontiac Grand Prix 2002

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2002 🢒 Grand Prix 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Whine/Growl Noise That Changes with Vehicle Speed

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 that the noise comes from the sprockets or the from the drive link assembly chain by placing your left foot on the brake and by moving the gear selector from Park or Reverse. If the noise stops, check the following items.

Drive Sprocket Support (522) and Driven Sprocket Support (609)

The bearing outer race support is rough or nicked.

Drive Sprocket (516) and Driven Sprocket (506)

•	Broken or sheared teeth

•	Nicked or scored bearing surfaces

•	The bearing race or roller bearing surfaces on the gear support inner bearing are rough or pitted

•	A damaged bearing

Drive Chain (507)

Stretched