Question about 2005 Pontiac Grand Prix

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I HAVE A 2005 GRAND PRIX AND MY CHECK GAS CAP SIGNAL KEEP POP ON DO ANY ONE HAVE ANY IDEAL Y...

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So is the gas cap on? tight? is the seal good? did you just gas up? what have you checked?

Posted on Sep 10, 2010

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1 Answer

2005 Pontiac Grand Prix won't fire at plugs or distributed cap


My info doesn't show a distributor on this vehicle, it shows a coil pack. I guess I can't help you?
Usually if no spark at the spark plugs, I also check for fuel injector pulse. If you have neither one, I check for rpm signal and or security system issue.

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Check gas cap


You'll need to get the computer scanned for trouble codes.
Chances are there is a small leak in the EVAP system. Could be a valve or hose in addition to the gas cap.

Feb 28, 2013 | 2001 Pontiac Grand Prix

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I have a 2005 grand prix v6 not super charged. the check gas cap came on a week ago and i replaced it and it still shows up. Last night while accelerating the car would not go then its jumped and start...


your gas cap light told you of a seal leak at the fuel tank. check all other line connections to the fuel tank the make sure they are tight. could also be a fuel pump losing pressure

Sep 17, 2011 | 2005 Pontiac Grand Prix

1 Answer

2004 Pontiac Grand Prix, check gas cap


Could possible be the Fuel Tank Pressure Sensor. It is located on top of the fuel pump. The fuel pump access is located in the trunk, under the carpet, behind the back seat. The AutoZone part number is SU 1390.

Apr 02, 2010 | 2004 Pontiac Grand Prix

1 Answer

My gas cap 2005 grand prix


If the cap was tight. It could be a different leak. Drive a few days. If the light doesnt go out, a Garage will need to check it for you, there may be more to it, like an evaporative leak.

Nov 05, 2009 | 2005 Pontiac Grand Prix

1 Answer

Moisture in truck, with check gas cap message on dash


The two are of course not related. Check the trunk seal for missing portion, tears, splits, etc. this has to be where the rain is coming in. You can check for leaks with a hose and climb in the trunk with a flashlight, having a trusty helper direct water to one area at a time to check for the leak. The gas cap light is probably on due to a defective evap. vent valve, which is located behind the left rear tire near fill tube for gas tank.

May 12, 2009 | 2005 Pontiac Grand Prix

1 Answer

I get a po455 code on my 2004 grand prix


I had a check engine light on for my gas cap. I fueled up and sometimes it would say "check gas cap" So i just plugged it in under the steering wheel and cleared the check engine light from my dash board. So far so good.

Apr 04, 2009 | 2004 Pontiac Grand Prix

1 Answer

Check engine light came on along with check gas cap


Did u have engine codes scanned? If not, have it done, as it may indicate the problem. Let me know. (most parts stores will scan for codes free) .

Mar 21, 2009 | 2004 Pontiac Grand Prix

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