Originally Posted by herk7769
Yes. I am not near my manual. Have not looked at it since new and just assumed that when the tank said "empty" it was.
With my elm-327 Bluetooth deal I'm able to see my fuel level in % .
When I fill up 100% my scanner says I'm only 78% full which means on the bottom end you have 25% left. Or 1/4 tank when gauge and light show empty.
We have identical trucks and I've filled up at 24 gallons once.
Talking with another forum member "works at a gm stealership" he says one leg of the fuel sender possibley broke and fuel sender is askew in the tank showing false readings.
They've seen it before.