2005 GMC Yukon Denali Spark Plugs

2005 GMC Yukon Denali spark plugs: 0.040 inches gap (VORTEC 6000 V8 (VIN U)). From the owner's manual, PDF page 422.

0.040inches

Gap · VORTEC 6000 V8 (VIN U)

2005 GMC Yukon Denali Owner's Manual, PDF page 422

0.040 inches (1.01 mm)Open the manual at this page ↗Added Oct 21, 2026 · Updated
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Spark plugs (gap) · VORTEC 6000 V8 (VIN U) · PDF page 422

0.040 inches (1.01 mm)

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As printed in the manual

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VORTEC 6000 V8 (VIN U) 0.040 inchesgap “0.040 inches (1.01 mm)” PDF page 422 ↗

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