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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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 12:04 PM
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WRENCHTECH
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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 3:18 PM
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RUDY8459
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thanks for the info, great help unlike auto parts store.
Nov 5, 2015 at 9:24 AM
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WRENCHTECH
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You're welcome
Nov 5, 2015 at 9:27 AM