2019 Escalade fuel level wrong

[swathdiver]

I am very familiar with driving this truck. I've driven it 100,000 miles in the last year. It has never acted like this until now.

When I said it filled 25 gallons, I mean that there was still 6 gallons left in the tank. And ALL the miles I put on it at that time were highway miles. I never idled it. That's why I'm worried something is very wrong. A 31 gallon tank, even with the computing, should NEVER read that it has only 1/4 left when only 80 miles of highway driving has passed. Again, when that happened, it ever so slowly again inched its way back up.

Notice how I never say "range", which I totally understand, as that can be calculated based on my driving habits. But what should NOT be calculated is actual fuel. If I put 25 gallons in a tank that is almost empty, it should show that it is full. Range, sure, calculate it. But not the actual gauge.

In my truck, I have found that the gauge is directly tied to the range. When the computer calculates that there is a lower range, it will decrease the fuel level. To me, that is strange behavior, but it's exactly what's happening.

Final note, this just started happening. Hasn't happened since I bought the truck.

Well, I would be curious as to what the shop manual says for your generation truck as to how that operates. You just might have a sticky float.

 

[thebronze]

I am very familiar with driving this truck. I've driven it 100,000 miles in the last year. It has never acted like this until now.

When I said it filled 25 gallons, I mean that there was still 6 gallons left in the tank. And ALL the miles I put on it at that time were highway miles. I never idled it. That's why I'm worried something is very wrong. A 31 gallon tank, even with the computing, should NEVER read that it has only 1/4 left when only 80 miles of highway driving has passed. Again, when that happened, it ever so slowly again inched its way back up.

Notice how I never say "range", which I totally understand, as that can be calculated based on my driving habits. But what should NOT be calculated is actual fuel. If I put 25 gallons in a tank that is almost empty, it should show that it is full. Range, sure, calculate it. But not the actual gauge.

In my truck, I have found that the gauge is directly tied to the range. When the computer calculates that there is a lower range, it will decrease the fuel level. To me, that is strange behavior, but it's exactly what's happening.

Final note, this just started happening. Hasn't happened since I bought the truck.

I have a '15 Suburban and a '19 Suburban. I've never had a problem with my '15's gauge reading incorrectly.

I bought my '19 in Oct and have had nothing but problems with the fuel gauge reading incorrectly. I filled up the other day and the gauge read just over half-full. I filled up today and got as much gas into her as I thought she'd take (it was down to less than a 1/4 tank) and the gauge read about 7/8 full when I was done.

I don't want to go through the hassle of dropping the gas tank and replacing parts. This SUCKS.

 

[Fless]

I have a '15 Suburban and a '19 Suburban. I've never had a problem with my '15's gauge reading incorrectly.

I bought my '19 in Oct and have had nothing but problems with the fuel gauge reading incorrectly. I filled up the other day and the gauge read just over half-full. I filled up today and got as much gas into her as I thought she'd take (it was down to less than a 1/4 tank) and the gauge read about 7/8 full when I was done.

I don't want to go through the hassle of dropping the gas tank and replacing parts. This SUCKS.

I'd be curious about what a scan tool would show as the tank level, in comparison to what the gauge indicates.

 

[jyi786]

I have a '15 Suburban and a '19 Suburban. I've never had a problem with my '15's gauge reading incorrectly.

I bought my '19 in Oct and have had nothing but problems with the fuel gauge reading incorrectly. I filled up the other day and the gauge read just over half-full. I filled up today and got as much gas into her as I thought she'd take (it was down to less than a 1/4 tank) and the gauge read about 7/8 full when I was done.

I don't want to go through the hassle of dropping the gas tank and replacing parts. This SUCKS.

Let me explain my experience so far.

This behavior HAS gone away, for the most part, because I learned and came to accept that what is shown on the fuel gauge is not the actual amount of fuel in the tank. It is an estimated value based on what the truck THINKS you'll have available....based on your driving style. In my case, there were even some bugs that I discovered with its estimation, but by and large this is a non-issue at this time.

If you idle a lot? The onboard computer is going to discount that from the total amount shown. In your case, if it shows 7/8 full, it means there's idling going on, whether or not that's remote start, or sitting idling in a parking lot. Eventually, as you drive the truck, the computer will adjust, and it will show the correct fuel level soon.

Do I agree with this behavior? I 100%, absolutely do not. I believe that the fuel gauge should always show what is in the fuel tank. But I can live with it now that I know what it's doing.