Chart 14 - Possible Causes of Transmission Noise

NOTE: Perform Preliminary Inspection First.

CAUTION: Before checking Transmission for what is believed to be Transmission noise, ensure presence and positioning of insulating plugs, pads etc.. Also make sure that noise does not come from other drivetrain components.

1. WHINE OR BUZZ:
- Oil level low.
- Plugged or restricted Oil Filter.
- Damaged Oil Filter Gasket.

2. KNOCKING NOISE FROM FRONT OF TRANSMISSION:
- Loose bolts (Converter to flex plate).
- Cracked or broken Flex Plate.
- Converter damaged.

3. KNOCKING NOISE WHILE DRIVING - MOSTLY ON ACCELERATION:
- Transmission Mount loose or broken.
- Cooler Line Mounts loose or broken.
- Cooler Lines touching body or frame.

4. KNOCKING NOISE WHEN VEHICLE IS STATIONARY:
- Loose Flex Plate Mounting Bolts.
- Cracked or broken Flex Plate.
- Damaged Converter.