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
Wednesday, November 4th, 2015 AT 12:04 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 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
  • 20,758 POSTS
You're welcome
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Thursday, November 5th, 2015 AT 9:27 AM

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