2000 GMC Sierra engine knock

Tiny
MADMANTOM
  • MEMBER
  • 2000 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
Engine knocks when first started for about one or two minutes and then quiets down, sounds more like a ticking than a knock
Thursday, January 22nd, 2009 AT 8:02 PM

1 Reply

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
Your engine has hydraulic roller lifters in it. It sounds like one, or maybe a few are, wearing and taking a little time to "pump" up. It will do this especially during cold temperatures. Make sure your oil level is correct.
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Thursday, January 22nd, 2009 AT 8:27 PM

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