Truck repair

2004 CHEVROLET SILVERADO
85,000 MILES • V8 • 2WD • AUTOMATIC
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SHARRELL
  • MEMBER
  • 1 POST
My 2004 Chevrolet truck makes a knocking sound when started. When the truck warms up the knock goes away.
Jan 9, 2011 at 7:53 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Usually it's either the crankshaft journal or bearing, or a connecting rod/wrist pin on one or more cylinders. After the oil pressure build sufficiently the knock diminishes, but if a stethocope is used, the knock is still present!
Feb 19, 2011 at 3:10 PM
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