Fueling difficulty.
Drifting
Joined: Mar 2013
Posts: 1,705
Likes: 539
From: Hampton VA
If you keep clicking on the pump, to get that little extra in, after it shuts off gas can get into the evap cannister clogging it and if that happens it will shut of the gas pump after just a little gas being pumped, expensive to have repaired
Team Owner
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
Stupid question but how do you know this? The C7 is 18.6 gallons so it isn't a lot (had an excursion with a 44 gallon tank which you can get 46 in if you tease the pump and have the vent modified). Are you sure the gauge is accurate?
Le Mans Master
Joined: Feb 2010
Posts: 7,798
Likes: 314
From: Santa Fe Tx
I've had similar problem, but it seems to be the way the gas pumps vapor sensor or their filter or ??? but seems to be gas pump. I usally get gas at a Buckeys that has like 200 gas pumps and it happens at the same pumps most of the time, but if I go to another pump it goes away?
Melting Slicks
Joined: Jan 2015
Posts: 2,271
Likes: 652
From: Darien, IL
St. Jude Donor '15-'16
I've had similar problem, but it seems to be the way the gas pumps vapor sensor or their filter or ??? but seems to be gas pump. I usally get gas at a Buckeys that has like 200 gas pumps and it happens at the same pumps most of the time, but if I go to another pump it goes away?
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Happens all the time to me, I pull the nozzle about half way out, and then turn the thing mostly upside down. Also best to not fill at full nozzle speed when it starts hiccuping like that.
Its annoying
Its annoying
Racer
Joined: Feb 2020
Posts: 305
Likes: 245
From: GSO, NC
Does this at every pump I have tried, except when the gas is coming out of the pump very slowly. I turn the nozzle at 90 or just past 90 degrees and it works. I do get the occasional strange look from others at the gas station when I am doing the gangster hold on the nozzle. 
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Drifting
Joined: Nov 2001
Posts: 1,348
Likes: 25
From: STL Mo
This happened on my 15 stingray, I ended up replacing the following parts. I tried all the different angles while fueling and different stations and pumps. Nothing worked. My Vapor Canister ended up being clogged up.
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Thread Starter
Race Director
Joined: Aug 2003
Posts: 15,540
Likes: 275
From: On the Mississippi Gulf Coast
St. Jude Donor '07, '11 thru '24
Official Sponsor of the 60 Day VacatioNN
10,000 poster in the "thread" Part II
This happened on my 15 stingray, I ended up replacing the following parts. I tried all the different angles while fueling and different stations and pumps. Nothing worked. My Vapor Canister ended up being clogged up.
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Team Owner
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
This happened on my 15 stingray, I ended up replacing the following parts. I tried all the different angles while fueling and different stations and pumps. Nothing worked. My Vapor Canister ended up being clogged up.
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Vapor Canister mpn # 4901340060
Vapor Canister Purge Valve mpn # 4410656845
Vapor Canister Vent Solenoid mpn # 4666096644
-Rich
Safety Car
Joined: May 2015
Posts: 3,680
Likes: 1,040
What year model C7 did GM fix this big-time annoyance? Has every C7 have this fueling problem?
You guys realize that the "vapor recover system" requires a seal and having the fuel nozzle half in or half out defeats the purpose and is not legale... You could go to "Q".. for heaven sakes!
You guys realize that the "vapor recover system" requires a seal and having the fuel nozzle half in or half out defeats the purpose and is not legale... You could go to "Q".. for heaven sakes!
Last edited by c5arlen; Oct 7, 2022 at 03:33 PM.
Drifting
Joined: Nov 2001
Posts: 1,348
Likes: 25
From: STL Mo
When researching the issue the others initially could have been a culprit as well. Process of elimination lol. I started with just the vapor canister purge valve, that didn't fix it. I then moved on to check the cannister I figured since I was there might as well replace the solenoid as well. Anyhow the canister was clogged easy fix maybe $200 total I think.