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Engine slap?

Tiny
LEONANDAMY
  • MEMBER
  • 2001 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Engine has a knock when first starting it up after sitting overnight. Knock goes away after 30-45 seconds. Knock does not happen after driving and shutting off and restarting.
Monday, June 24th, 2024 AT 4:44 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Yep, this is common on high mileage engines because of extended clearances in the rod and main bearings. I would change the oil and filter and use 20/50 weight and add lucas oil stabilizer. Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-change-engine-oil-and-filter

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Monday, June 24th, 2024 AT 4:17 PM

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