Question about 2006 Pontiac G6
Error message says Check Gas Cap
Posted by Anonymous on
I hope you didn't overfill your tank.. raw fuel into the vent valve in the filler neck will generally screw it up.. this causes no pressure to build in the tank and it assumes that it because of a gas cap leak... this is one possible reason
Posted on May 23, 2014
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Posted on Jan 02, 2017
it is located on the passengerside under the altenator closest to the firewall. make sure the vehicle is turned off reach in under the altenator and you should feel the cap.
Posted on Sep 15, 2008
buy a new gas cap or get it diagnosed. Check the seal for cracks and check the filler neck the seal touches for cracks
Posted on May 11, 2010
Testimonial: "going to go get gas cap checked out thank you"
This sensor will also set when there is a leak in the evap system. Check the hoses under the car as they go into the fuel tank. One of them is for the evaporation system. It goes to the evaporation cannister. If that hose is leaking, or if the purge valve is stuck open, you can also get the message you are getting. Your evap cannister and purge valve should be right by the fuel tank, but you'll need to also trace the hose from the cannister to the engine to make sure that hose isn't leaking. If you have any questions, please let me know.
Posted on Oct 18, 2010
SOURCE: I too have a Pontiac
You'll want to go over your warranty information as emission systems have different warranties than the rest of the car. It might be possible to have the cat replaced for free if it still qualifies under the EPA warranty.
Anyway, you probably blew the exhaust gasket before the cat in question as there is too much back pressure in there since the cat is likely clogged.
Posted on Feb 25, 2011
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