2005 Buick LeSabre Q&A
2005 Buick LeSabre Question: gas cap loose is turning on service engine light soon on
have codes scanned at auto zone and post so we can adv - globalhelper
A new cap will not turn the light off IF indeed it was actually the problem. But a scanner will and while hooked up scan codes as suggested. - pushrod
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
No corrosion on filler tube Replaced Gas cap light always on No fuel smell