Missing or Damaged Noise Suppression Components

- Noise suppression components may be damaged or missing.
- Check radio frequency interference suppression grounding effectiveness by wedging a large file between metal parts to make sure of proper ground, such as between the tail pipe and body or between the fender and frame, while radio chassis is playing and engine is running.
- Listen for a decrease in the objectionable radio chassis noise. If a reduction in noise is noted, first try tightening body and exhaust system clamps and brackets. Then, if necessary, install a new radio frequency interference suppression bond between the two metal parts to make sure of proper ground.