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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Manual Transmission - NV 3500 - Service) >> Diagnostic Information and Procedures >> Transmission Clunk on Acceleration or Deceleration >> Diagnostic Aids

Diagnostic Aids

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All manual transmission have gear play that might cause a clunk. If transmission is suspected of causing clunk, compare it with a similar vehicle. An internal clunk in transmission is usually caused by wear between 2 components, or from improper assembly, which would also cause other symptoms.