Noise and Vibration Analysis
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
A noise or vibration that is noticeable when the vehicle is in motion MAY NOT be the result of the transmission.
If noise or vibration is noticeable in PARK and NEUTRAL with the engine at idle, but is less noticeable as RPM increases, the cause may be from poor engine performance.
- Vibration may also be caused by a small amount of water inside the converter.
- Inspect the tires for the following conditions:
- Uneven wear
- Imbalance
- Mixed sizes
- Mixed radial and bias ply
- Inspect the suspension components for the following conditions:
- Alignment and wear
- Loose fasteners
- Driveline damage or wear
- Inspect the engine and transmission mounts for damage and loose bolts.
- Inspect the transmission case mounting holes for the following conditions:
- Missing bolts, nuts, and studs
- Stripped threads
- Cracks
- Inspect the flywheel for the following conditions:
- Missing or loose bolts
- Cracks
- Imbalance
- Inspect the torque converter for the following conditions:
- Missing or loose bolts or lugs
- Missing or loose balance weights
- Imbalance caused by heat distortion or fluid contamination