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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 992 (Engine Mechanical - 4.3L) >> 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

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Engine Noise on Start-Up, but Only Lasting a Few Seconds

Cause Correction
Incorrect engine oil, viscosity Install the correct engine oil and oil filter. Refer to Engine Oil and Oil Filter Replacement .
Incorrect oil filter, without anti-drainback feature Install the correct engine oil and oil filter. Refer to Engine Oil and Oil Filter Replacement .
Worn, damaged or improperly installed oil filter by-pass valve
  • Inspect the oil filter by-pass valve.
  • Repair or replace damaged components as required.
High valve lifter leak down rate
  • Inspect the valve lifters.
  • Repair or replace damaged components as required.
Worn, damaged or improperly installed crankshaft thrust bearing
  • Inspect the crankshaft.
  • Inspect the crankshaft thrust bearing.
  • Repair or replace damaged components as required.