'16 Sierra Denali Fuel Gauge Issues

[ajmalian]

Hey guys,

 

I have a '16 Sierra Denali with the digital driver information screen between my dial cluster, which includes my fuel gauge.

 

Since last couple of months I have been having this issue where I tank up completely, however the gauge still reads that it's 1/8th less than full. In the beginning at least after gasing up when I'd drive off, it would take up to 15 minutes of driving (Yes the driving was needed. Being stationary doesn't do it) the needle would finally creep up to the full tank mark.

 

Now, when I tank up full, it goes all the way to the same point (1/8th short of full) and then starts dropping to the 3/4th full mark while it's still fueling up. And then now in about 15-30 minutes of driving it goes up to that 1/8th short of full mark and before I would have even driven 40 miles, it starts dropping even past the 3/4 mark.

 

Anybody else got or heard of this issue? What could it be? I'm even getting much shorter fuel ranges now. I've checked myself and there is no fuel leaks...

 

Any guesses??!!

[Sierra706]

You shouldn't be running the engine while fueling up

 

 

Sent from my iPhone using Tapatalk

[O_J_Simpson]

Warranty the sending unit.

[GMCustomerService]

Hi ajmalian,

 

 

We’re sorry to hear about this fuel gage issue. Feel free to send us a private message if you’d like us to reach out to your dealer on your behalf. Thank you for being a valued GM customer, we appreciate it!

 

Regards,

 

Anthony

GM Customer Care