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Symptom Chart -- NVH

Condition Possible Sources Action
NOTE: NVH symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, refer to Section 100-04. Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, refer back to Section 100-04 for the next likely system and continue diagnosis.
Vibration -- a high frequency (20-80 Hz) that is felt through the seat or gear shifter. Changes with engine speed Transmission fluid cooler tubes grounded CHECK the transmission fluid cooler tubes. REPAIR as necessary.