Difficulty in refueling

GMCustomerService · February 27, 2013

I have a problem filling my tank also.

What I found is if I hold the nozzle up instead of letting it rest the tank will fill.

If I let it rest like you're supposed to it will click off time after time.

It must be the way the fill tube is shaped because it prevents the fuel from going straight into the tank and causes the fuel to create a back pressure on the nozzle and it senses that the tank is full and clicks off.

It happens at almost every gas station so I know it is not the nozzle.

Is this the same problem everyone is having?

Have you had a chance to mention this to the dealer? Keep me posted and feel free to contact me directly if you need additional assistance. Thank you.

Tricia, GM Customer Service.

[email protected] · March 1, 2013

Mine has done this sporadically since new, I just put up with it. Usually more prevalent when the gas tank is near empty. Some pumps are more sensitive than others.

Where is the evap. canister located? I will check the screen to to see if that helps.

scooby5121 · March 2, 2013

THIS IS A REPEATED QUESTION..

Search in the Forum in the Search Box on the top right of the page.

Type in Location of Evap Cannister..

There is tons of pics, etc on it.

Scooby

CRSilverado · March 4, 2013

I have a problem filling my tank also.

What I found is if I hold the nozzle up instead of letting it rest the tank will fill.

If I let it rest like you're supposed to it will click off time after time.

It must be the way the fill tube is shaped because it prevents the fuel from going straight into the tank and causes the fuel to create a back pressure on the nozzle and it senses that the tank is full and clicks off.

It happens at almost every gas station so I know it is not the nozzle.

Is this the same problem everyone is having?

Same problem here. 2013 6.2 1500 Silverado. Less than 1000 miles but every time I add gas I have to hold the nozzle up or it cuts off. Afraid it's just the way the truck is made.

Doug in Oregon · December 26, 2014

I have an 07 Silverado Classic, I have had refueling issues right from the start when I got it brand new. I have had the relocation of the canister and the evap solenoid. I have two issues:

1. Refueling takes forever. I have nothing blocking the hose, the canister and the evap hose and valve and filer are new. But I hear fuel gurgling up teh filler neck everytime I get gas. Its a pain here in Oregon as we are not allowed to pump our own fuel. and they think that its full after .20 worth of gas.

2. CODES P0499 and P0455. I have replaced the solenoid like I said and the power wire for teh soleinod has 12VDC wither the key is on or not. When I turn he key on (KOEO) it drops to 11.7VDC and the other side doesnt have any. I was told my a chevy mech that one side gets 12 and when the key is on, the other leg gets 1VDC, thus creating a differential in voltage and closes the valve to create a sealed system for vacuum. This isnt happening.

I (for testing purposes) tapped off the evap line going IN to the cainster. Zeroed out the codes and sure enough the 499 code was gone., then I removed the tape and it came back, do that tells me that the part of the ECM that reads that is working. But the ECM isnt sending a ground or 1 vdc to teh white wire of teh solenoid valve.

Why not? How do I fix that, or test for that.

What can I do about the refueling issue? PLEASE HELP

Doug in Oregon · December 26, 2014

Oh and holding the nozzle at an angle, or holding the nozzle away and creating a gap to allow the vapors to escape isnt working. I've ad this issue for 7 years and I have tried everything....excpet the right way to fix this truck.

Doug in Oregon

Doug in Oregon · December 30, 2014

So this weekend I wanted to verify that none of the vent lines were plugged up causing the refueling issue. I took the bed off the frame and got access to the top of the fuel cell. I then checked all the vents, they were all good, then I took the filler neck off and the screen was wedged in sideways blocking the fuel from going in!! I have yet to try it but I am sure that is the issue!!

I tried to post a picture of that filter sitting all crocked but I cant. The screen is pretty thick and that blocked the filler tube I'd say no less than 90" blocked

2stimpy · March 4, 2015

So this weekend I wanted to verify that none of the vent lines were plugged up causing the refueling issue. I took the bed off the frame and got access to the top of the fuel cell. I then checked all the vents, they were all good, then I took the filler neck off and the screen was wedged in sideways blocking the fuel from going in!! I have yet to try it but I am sure that is the issue!!

I tried to post a picture of that filter sitting all crocked but I cant. The screen is pretty thick and that blocked the filler tube I'd say no less than 90" blocked

And? was this the solution?

I am having the same problem, almost impossible to get fuel in.

Only way i can fuel up is with a can. 2008 Silverado.

Doug in Oregon · March 4, 2015

Hello 2Stimpy, YES!! That was the issue. Apparently a few years ago someone tried to steal gas and must have run something down the filler tube and knocked it sideways. The hose is not very large to begin with and the strainer is fairly thick so when it was knocked all out of whack it took up a lot of room and gas had a hard time flowing. Its all better now!

I took my bed off to inspect the fuel tank and all teh vent hoses were in good shape and right before I was ready to put the bed on I decided to inspect the filler neck! There it was! Taking the bed off was easy and kinda fun!

2stimpy · March 4, 2015

Ok, so the blockage was just above the tank?

Is it impossible to get there without lifting the bed?

Doug in Oregon · March 5, 2015

The strainer or whatever it’s called sits about 1" up inside the filler neck hose from where it mounts on the tank. The fuel tank has a 90° hose barb that the rubber filler hose fits onto ( kind of like the radiator hoses do) well that strainer fits snuggly up against that and the hose fits over top of them and is secured with a clamp.

Well I found it a pain in the rear to get to that as you have to be on your back to get to it. So unless you’re good at twisting and turning and reaching all at the same time then it’s easy to take the bed off. The hardest thing on taking teh bed off was that dang light connection. it was on there good.

It was 3 bolts (17mm I think) on each side ( 3ea for the 1500s and 4ea for the 2500 so I was told) and a light connection just above and to the left of the license plate. It was so simple. I was thinking it was going to be this huge ordeal, but it wasn’t. I didn’t have anyone to help me lift the bed off, but I have access to a fork lift with 6 foot extenders and it was nothing to use a block of wood to lift the bed up a few inches and slide the forks in and boom! it was up and off! I wish I could post pics here, but I can’t seem to get it let me.

macsaby · October 30, 2015

So I was overseas on business for three weeks and just got back. My wife started having symptoms similar to what is mentioned here. Of course, she took the car to the dealer because she loves and trusts them. Long story short, they charged her $960 to fix it! Is this typical? What the hell is wrong with people... and I mean both, my wife and the dealer!

Kirby33 · December 27, 2019

Did you ever get the problem solved I am haveing the same issue on my 04 Sierra looking for advice?

nolte · December 27, 2019

I refueled my 04 Avalanche at the slowest setting for 15 and a half years before trading it in last week. This issue was my only complaint about that truck, but since it did it from brand new I just thought it was a design error.

I wish I'd seen this forum/thread....