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2001 Chevrolet Silverado spark plugs

Tiny
RUDY8459
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 4.8L
  • V8
  • 4WD
  • AUTOMATIC
  • 133,000 MILES
Replacing spark plugs and all the parts stores that I have contacted say that the plugs should be gapped at.040 but the emissions sticker on my truck says.060 inches. I also called my local Chevy dealership and
they could not give me an answer. My truck is the Canadian model. Which gap is correct?
Thank you
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Wednesday, November 4th, 2015 AT 12:04 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The correct gap for your engine is.040 but if these are platinum plugs, you aren't supposed to attempt to gap them at all. They are pre-gapped. You can damage them by trying to change the gap.
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Wednesday, November 4th, 2015 AT 3:18 PM
Tiny
RUDY8459
  • MEMBER
  • 14 POSTS
Thanks for the info, great help unlike auto parts store.
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Thursday, November 5th, 2015 AT 9:24 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You're welcome
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Thursday, November 5th, 2015 AT 9:27 AM

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