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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 681 (Engine Mechanical - 8.1L (On-Vehicle)) >> 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 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. 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 oil level
Too high an oil level will cause aeration within the oil		 Add or remove oil as required to achieve proper level.
Incorrect oil filter without anti-drainback feature Install the correct oil filter.
Incorrect oil viscosity
  • Drain the oil.
  • Install the correct viscosity oil.
High valve lifter leak down rate Replace the valve lifters as required.
Worn crankshaft thrust bearing
  • Check the crankshaft endplay.
  • Inspect the thrust bearing and crankshaft.
  • Repair or replace as required.
Damaged or faulty oil filter by-pass valve
  • Inspect the oil filter by-pass valve for proper operation.
  • Repair or replace as required.
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