A Loose or worn gas cap may cause Check Engine Light to illuminate.Google+
Car Problem Reports
Chevrolet Equinox Check Engine Light Due to Gas Cap Issue
Chevrolet Equinox Problem
Average Mileage: 79,588 mi (28,000 mi - 180,000 mi)
Visitor, 2007 Chevrolet Equinox
Gas cap throws on Engine Light....purchased an after market cap, light came back on. Problem resolved with a cap ordered from a Chevy Dealer for the exact year, make and model......light never came back on.
Visitor, 2006 Chevrolet Equinox, 68,000 mi
replaced gas cap myself with GM part - cost under $30
Visitor, 2007 Chevrolet Equinox, 100,000 mi
Engine light coming on and every time we take it to dealer the say is faulty gas cap. Replaced and is ok for about a year and then light comes on and cap is loose and will not tighten. I replaced two since purchasing new in 2007. Is there a better cap I can purchase I have always bought from dealer.
Visitor, 2007 Chevrolet Equinox, 40,000 mi
gas cap not sealing throwing engine lite on
Visitor, 2010 Chevrolet Equinox, 68,100 mi
The light comes on only when it is extremely cold.
Gas cap keeps blowing off, car stalls & engine check light comes on. Have to get out & put cap back on!!! Has happened so many times cap has blown the gas door latch off!!!Getting terrible gas mileage...lost to fumes & vapors!!!
Visitor, 2007 Chevrolet Equinox, 124,000 mi
Check engine light on, gas cap not sealing properly. Had to buy a new cap
Visitor, 2006 Chevrolet Equinox, 134,000 mi
smoke test showed smoke coming from around gas cap
Visitor, 2005 Chevrolet Equinox, 80,000 mi
Gas cap will not tighten. Gas mileage has went down too. Gas may be evaporating.
Visitor, 2008 Chevrolet Equinox
Gas cap does not tighten therefore causing check engine light to be on