hard to fill gas tank 2016 sierra

[Sean Neilan]

It's a "safety feature". One that requires you to just barely stick the nozzle in and hold it in a precarious position.

 

That's apparently safer than having the nozzle fully inserted.

 

 

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It makes me miss living in Jersey and some other poor schmuck standing there in the cold instead of me.

[Joe Deesha]

I have a 2016 Silverado 1500 same problem but notice something different... Something is not holding the housing properly because it actually broke and the intake hole + housing is moving around freely . This is actually a good thing because now I know it’s not mounted or aligned properly due to lousy design...now I have to go get it fixed.

[Ravenkeeper]

I haven't had the same issues with my '18, like I did with my '15. 

[robbrad4d]

This is an evap canister problem.  As fuel tries to enter the tank the air/vapor inside the tank has to escape through the evap canister to be filtered before leaving the system.  Dust and dirt constantly clog these canisters on GM vehicles due to poor design.  Fuel cannot enter the tank efficiently if the air cannot escape.  That is why leaving half the nozzle out is helping because the vapors are able to escape around the fill nozzle.  Several youtube videos on how to fix this or bypass