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

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. 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 filter without anti-drainback feature Install the correct oil filter.
Incorrect oil viscosity
  1. Drain the oil.
  2. Install the correct viscosity oil.
Worn crankshaft thrust bearing
  1. Inspect the thrust bearing and crankshaft.
  2. Repair or replace as required.
High valve lifter leak down rate Replace the lifters as required.
Excessive rod and main bearing clearance Replace the bearings as required.
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