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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Mechanical - 6.6L - Introduction) >> Diagnostic Information and Procedures >> Engine Noise on Start-Up, but Only Lasting a Few Seconds

Engine Noise on Start-Up, but Only Lasting a Few Seconds

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Engine Noise on Start-Up, but Only Lasting a Few Seconds

Condition Action
Incorrect oil viscosity
  1. Drain the oil.
  2. Install the correct viscosity oil.
Excessive piston-to-cylinder bore clearance
  1. Inspect the piston and piston skirt, connecting rod, and cylinder bore.
  2. Repair or replace all damaged components.
Damaged or faulty oil filter by-pass valve
  1. Inspect the oil filter by-pass valve for proper operation.
  2. Repair or replace as necessary.
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