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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transaxle - 4T80-E - Service, Diagnosis & Troubleshooting) >> Whine Noise Varying with RPM or Fluid Pressure

Whine Noise Varying with RPM or Fluid Pressure

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Whine Noise Varying with RPM or Fluid Pressure

Checks Action
DEFINITION: A high pitch whine which will intensify with engine RPM or which is Oil Pressure sensitive
Oil Pump System Verify that the noise is internal to the oil pump during a preliminary oil pressure check. An increase in line pressure will vary an oil pump noise.