2003 GMC Yukon SPARK PLUGS

2003 GMC YUKON
68,000 MILES • V8 • AWD • AUTOMATIC
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LAKERS20
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I have a 03 Yukon Denali XL and just had my spark plug changed. Everything seems to be running good but I am just wondering . Do you set the gap of the spark plugs to your car specifics or the gap that is set on the new plugs. How Would I know if the plugs were installed correctly and what is the gap size on a 03 XL DENALI???
May 23, 2008 at 7:34 PM
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MHPAUTOS
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Hi there.

The plug gap should be .060" or 1.52mm. This should be checked with a wire type gauge. All plugs are pre gapped, but a good mechanic will re check when installing. The only way to check them is to pull a plug and re check gap.

Mark (mhpautos)
May 24, 2008 at 5:45 AM
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