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: 74,021 mi (16,987 mi - 180,000 mi)
Visitor, 2006 Chevrolet Equinox, 68,000 mi
replaced gas cap myself with GM part - cost under $30
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, 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, 2006 Chevrolet Equinox, 140,000 mi
Found cheap gas...so I bought it . Shortly after using only this gas the check engine light came on.switched back to my regular gas and tightened the gas cap...went away.comes on usually after I get gas. I changed caps but the new one would not seat properly so the light came on again. I took back the new cap, and used the, older one but cleaned it we'll along with the port. The light went off and has stayed off. I had AutoZone scan the OBD... and it stated there was a large leak. Gas cap was the first reason!!!!!. I will never buy another chevy... they cannot seem to engineer cars the way they used to. All of the problems we have had are related to miss poor design and engineering. The ignition(470.00),CD player,Windows won't go down or up, ac works when it wants,the list goes on and on. I take care r e and change my own oil etc...now I have to remove engine parts to change the plugs???. The brake sensors are shot also, Nd, this is a known problem. Instead of waiting for class action litigation, maybe chevy or GM should do the right thing and just take care of the problems instead of denying all the posts about common issues COMMON PEOPLE have.
Visitor, 2010 Chevrolet Equinox, 68,100 mi
The light comes on only when it is extremely cold.
Visitor, 2012 Chevrolet Equinox, 58,000 mi
Received several messages about the gas cap being loose. Tightened it every time. Then the Check Engine light came on due to loose gas cap. Took it to the dealer. They replaced the gas cap. Check Engine light came on again about a week later. Dealer replaced a valve in the fuel system. Picking the car up today, so don't know if that will be a permanent fix or not.
Visitor, 2007 Chevrolet Equinox, 40,000 mi
gas cap not sealing throwing engine lite on
Visitor, 2012 Chevrolet Equinox, 55,000 mi
All of a sudden the engine light is on. Everything works fine, no engine or other mechanical problem.
Visitor, 2006 Chevrolet Equinox
Had to go thru emmisions testing and the light came on a day before! Was told to relace gas cap with one from the dealer. Paid twice as much for it but it fixed the problem.
Visitor, 2013 Chevrolet Equinox, 17,500 mi
light came on about a month ago then put gas in and it went off. Just the other day it came on again. Not very many miles for this to happen.