2001 Chevrolet Silverado spark plugs

2001 CHEVROLET SILVERADO
133,000 MILES • 4.8L • V8 • 4WD • AUTOMATIC
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RUDY8459
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  • 14 POSTS
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
Nov 4, 2015 at 4:04 AM
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WRENCHTECH
  • ✓Experienced 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.
Nov 4, 2015 at 7:18 AM
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RUDY8459
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  • 14 POSTS

thanks for the info, great help unlike auto parts store.
Nov 5, 2015 at 1:24 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,761 POSTS
You're welcome
Nov 5, 2015 at 1:27 AM
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