GMC Yukon Denali Problem Report
GMC Yukon Denali Check Engine Light Due to Gas Cap Issue
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. - friendly repair
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. - Visitor
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. - Visitor
check engine light stays on and odometer malfunction
I replace the gas cap but the light still keeps going on and off
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i just put a new engine in a 1999 gmc yukon denalie it has a rebuilt transmission with less tha...
Fuel milage has decreased significantly due to such.