Has anyone else had problems with their gas guage in 07 escalade?
Mine reads quarter of a tank then next time you start it it reads half a tank last night it said low fuel and guage showed empty this morning back to a quarter of tank and no low fuel warning i only have 583 miles on it

i know my dads 07 does that too, it gets kinda annoying. But i figured that, the gas gauge will read how much gas is left, if you continue driving the way you currently are. Because i can start it up and it'll show full tank, but then ill be driving on the freeway 10 minutes later and it will read half a tank or something like that. But thats just my explanation for it haha.

do you think it is a computer problem? something the dealer could fix quickly instead of dropping the fuel tank

I have no documentation or technical knowledge to back this up whatsoever (disclaimer) but I know my 06 EXT did this as well. I believe the fuel gauge is based on how much fuel would be left given current driving habits/conditions, not specifically how much fuel is left in the tank. I too would have 1/4 tank driving in the city, then I'd stop, get back in and jump on the highway and I'd have just under a half of a tank. I can only assume it's because driving conditions changed.

I've not had the 07 long enough to notice, but I assume that would be the same way.

Where do you park? Is it level ground?
The computer only uses the fuel level sensor to report how much fuel is left in the tank. If you park pointing uphill or downhill it will affect the reading on startup.
Put a cup of water in a cake pan, then tilt the pan up on one end.
Now pretend the sensor to detect the level of the fuel is in the middle, how's it going to read?

The only time my gas gauge reads wrong is when I park on a hill, then it takes some time to correct it's self once you drive. The 07's seem more sensative than my 03' in terms of the fuel gauge, but I have several non GM cars that act the same way. :)

Hey ewill3rd I noticed you are from alexandria I purchased the truck from Lindsay. I noticed the problem on flat ground.Also when driving never have caught it going back from the 1/4 to 1/2 tank though.I dont know if it moves fast or slow.It would be nice if it just worked like a regular gas guage

LLt please let me know if you start getting the same problem if it is a problem

My 07' with 7k miles did this over the weekend. Driving home low fuel message came on. Next morning started truck, low fuel message there. Before I moved 100 feet the message was gone and I now had 82 miles of fuel left. During a 2 mile ride it dropped to saying I had 65 miles of fuel left. This has never happened before in this vehicle or any other I have owned. Seems flaky like the wiper operation.

jci, I work at Lindsay.
I don't see any bulletins regarding the fuel level sensor or the gage.
I am not aware of any software updates, but they come out so fast I wouldn't rule it out. Sometimes we can reprogram the IPC or the PCM to help systems work "better" but it's up to the engineers to find out there is a problem and change the software.
Due to the way the system is set up I try to explain to people that the fuel gage is really not a hyper accurate way to know the exact level of fuel in the tank. It's an approximation of how much you have left. If any manufacturer wanted it to be completely accurate they'd have to redesign the system and it would display an actual number of gallons instead of a percentage of "full" on the gage itself.
If you focus on the fuel gage it will never work right. It's not really designed to be a "flight instument".
I hear a lot of complaints about fuel gages but rarely is there anything I can do about it in the field. It's up to the engineers to design it the way most customers think it should work, but they don't.
If it ever suddenly drops to E then I can probably do something about it. On older models the sensor teeth wear out causing really erratic operation.
You'll normally see fluctuations between 1/8 and 1/4 tank but just "average them" and get fuel when you think you need it.
I usually fill mine when it gets to 1/8 or 1/4 depending on how often I check it. Of course I live close to work so I only have to fill up twice a month... if that often.
I can't say this system is perfect, but I can't say that I have seen any complaints that would indicate the system is "broken" in this topic.

I had the same problem on a 04 EXT. The tank needs to come out and replace the fuel sending unit. GM has had problems with these in the past. Sounds like they still do. By the way I had it replaced twice in 2 days as after it was repaired the new sending unit was screwing up within 5 miles after leaving the dealership. They repalced it again and have not had any more problems.

ewill ,I guess I will just keep an eye on it to see if it happens again.I appreciate you checking for bulletins on it.Kinda pissed me off a little bit to be honest after spending all that money and the guage doesnt work as good as the one in my gmc truck.

jci,

No problem, to be honest with you it's probably the same setup as you have on your GMC.
I think they reoriented the pump and use a different float arm but we have been using pretty much the same setup and software since the late 90's on the fuel sensors.

Our tanks used to have baffles in them to keep fuel on the pump and prevent fuel "slosh". That was when the pump just had a strainer on the end and it hooked right to a pipe. Now we use a big "module" that has the pump inside a housing that looks like a big tumbler. They hook a small pipe on the outlet of the pump and feed a small "jet" of fuel to the bottom and it siphons fuel up into the cup to keep it full. That way if the fuel sloshes away from the pump there is sufficient fuel to keep it running and the ECM is buffered to slow the change in reading instead of showing an instant reading like the old ones did.
Now we have no baffles, it's just a big open tank with this new module in the tank somewhere.
The fuel really does some dancing around in the tank depending on how you drive it and even a buffered signal might look erratic depending on how you are driving.

As I said, I try to ignore my gas gage as much as possible, I find if you fixate on them it will drive you crazy.
If it was an older one I might say you could have a problem with the sensor. The older ones had a tendency to wear the sensor teeth off. Recently they redesigned the parts to be much more resilient though and I know those have the new sensors in them.
If there is a sensor failure, the PCM knows how to tell and it will send the fuel gage to E and turn on the low fuel light so you'll bring it in.

Just keep an eye on it (but not too closely!) ;) and let me know if it still keeps giving you grief.

If you want to PM me the VIN, or the last 8, I can look and see if there are any updated calibrations that might address the concern you are having.

ewill, 7R262968 Thanks

I have the same problem on my 07. I had it into the dealer for some other work and they said they would take a look at it. They reprogrammed it and it still does the same thing. They said if it continues to happen they will replace the system. I had it into the dealer cause my nav wasn't getting a GPS signal. They checked it out and said that my onstar antenna was overshadowing my nav one. I just check my trip meter everytime it starts acting up so I have a better idea of how far I can go.

I'll try to check from work today. As I may have said, sometimes the calibrations help but may not make it work exactly the way you think it should.
Post a reminder or PM me.

This is all I see as far as calibration updates for the IPC.
Nothing related to your concern and there is no telling if it has the latest in it or not until it's hooked up to the computer.
Part Number CVN Description
15929242 000094A6 New software to left-justify some message text and to enable OnStar turn-by-turn information in DIC.
15884099 0000ABD1 New calibrations to correct several Arabic language translations.
15856762 00007C5F Operating system


There are some interesting notes for the ECM calibrations but I don't see anything for the fuel gage. Again, it's impossible to know which ones you have.
I'd say I don't see anything that might address any fuel gage issues.

thanks ewill maybe see you when i have 1000 mile service done

I hide accross the street from the main building in our old body shop.
I stay pretty busy.
Always nice to meet another forum member if you want to have the service writer call me, I'll come and say hi if I am not too busy.
Do you have a service writer you normally go to or have you been to us for service before?

I have never been there for service before

Just pull inside and walk into where the writers are.
I usually like my customers to deal with Donna or Ted.
They can call me and see if I have time to come over and say hello.

Thanks ewill

No problem.
Hope you enjoy the upcoming holidays.
:D

Hope you enjoy the holidays also ewill thanks for all the info if i have any other questions I will definitatly pick your brain
Thanks

I encountered similar issues with my 03 Tahoe 71. Even worse my truck would run dry often with a reading of anywhere from 60-0 miles to go until empty. Having run dry several times I really watched my 07 Escalade gas guages on a recent 1000 trip. While I did not encounter the issue you raise I did notice that when I would fill up that the "miles to go until empty" varied with each fill up. And not by a couple but rather over a hundered mile delta. Frankly, I do not trust gas guages. Especially, running out with a 57 to go reading while running high speeds through Charlotte and Atlanta traffic on 85...UHG!! ARGH!!

Had similar problems on our '04 Suburban, after about a year of ownership. The gauge would randomly go from half to empty to a quarter to almost full, to also sometimes at the approximately correct level. Would do it usually while driving, but also changed after sitting and then being started up sometimes.

The dealer figured it out pretty quickly, and after replacing the sending unit in the tank, it's been perfect ever since.

DLH,

Your "miles to go" is based on your average speed for the last given time interval.
That is dependent on what type of driving you have been doing.
If you have been sitting at stop lights all day it very well could be over 100 miles less than if you just got off the highway. The way you drive it makes it "unreliable", it calculates the future based on the past.
The computer assumes that you are going to be driving the same as you have been recently. Resetting the fuel and trip meters will help the accuracy of these systems for the short term.

DLH,

Your "miles to go" is based on your average speed for the last given time interval.
That is dependent on what type of driving you have been doing.
If you have been sitting at stop lights all day it very well could be over 100 miles less than if you just got off the highway. The way you drive it makes it "unreliable", it calculates the future based on the past.
The computer assumes that you are going to be driving the same as you have been recently. Resetting the fuel and trip meters will help the accuracy of these systems for the short term.

Good to know, That buggd me for the longest time---TH@NX!:worship:

It bugs me sometimes too.
They could make the algorithm a little more complex but I think they are purposefully trying to avoid that.

You are quite welcome.