GMC Yukon Denali Problem Report

GMC Yukon Denali Check Engine Light Due to Gas Cap Issue

(9 reports)

A Loose or worn gas cap may cause Check Engine Light to illuminate.

replaced, gas cap and removed negative battery term for2 min. light went out. -
Check gas cap light came on, tighten gas cap. A day later the light came on again. We replaced the cap. A week lated it happen again. -
Got a diagnosis with a code using the code machine...the code could have been a couple things related to gas, but it was determined that it was just that the gas cap was too loose ....just replace the cap. -
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