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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information And Procedures >> Buzz Noise or High Frequency Rattle Sound

Buzz Noise or High Frequency Rattle Sound

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Buzz Noise or High Frequency Rattle Sound

Checks Action
DEFINITION: A buzz or high frequency rattle
  • Trace Cooler Pipes
  • Check for binding or contact at the Radiator, other than at the Cooler Pipe connectors
Verify a pressure buzz by watching for a needle vibration of the pressure gage. A road test may be necessary. Refer to Road Test .