I'm got 19.5 mpg on a short highway trip through small
towns every so often on a 75 mile trip the first day I
bought this truck, 2006 Silverado, 1/2 ton, 5.3L V8, AT, AC on.
This week, almost all city driving, I got 20.5! AC on about
half the time. Certainly can't complain about that!
Problem is my fuel gauge will not go all the way to full!
Bummer. Is this a bug? A commonality?
The pump shut off first time at 8+ gallons, and I could not
believe that was all I used all week, as the attendant was
hanging up the hose. I told her to put it back in. She
did and got probably 2 more gallons in it. I paid, and
pulled away to set my trip meter, and the thing registered
only 3/4 full. I waited. Stayed there. I backed up to
the pump and had her fill it again. 1.5 gallons. Went up
to 7/8's full and thats as far as she'll go.
My 2000 Z71 is tough to fill all the way. I think it's because unloaded the
rear of the truck sits higher then the front. Since the fill is on the front
of the tank it traps air in the rear. If I keep trying I can get two or
three gallons in after it first stops filling. I don't have that problem
with my fuel gauge, mine reads empty until I use about a quarter tank and
then it's fine.
While this sounds feasable at least, I would think
technology would have recognized and solved any such
problem as that. If it hasn't, where are we? A simple,
effective vent would eliminate that problem, and I'm sure
there is one, otherwise you wouldn't be able to pump fuel
out of the tank at all.
Since the fill is on the front
Reads empty until you use a quarter tank?! Come on now,
surely you didn't mean to say that, or your are trolling.
Strangely enough, at my next fill, the gauge did go all the
way to full. Stranger still, to me, this third tankful I
only got 10mpg as opposed to 18.5 and 19.5 on the first
two! On this third tank, I did do a lot of short hopping,
shopping for after market parts and turning off the engine
and restarts, but I am amazed if that made this get that
poor of fuel mileage.... still.
Have you already talked to the dealership? How do you know they won't
be able to fix, explain, or replace? If I just spent, what, @$30,000
on a new truck, they would ABSOLUTELY address the problem to my
satisfaction, no matter how obtuse or irrational.
Yes, I have. You might see my previous post about the
engine noise on 5/22, and how they addressed that. Let me
know if you can't find it and I'll repost it for you.
I was lucky to have had a day off to inclement weather that
day, otherwise I'm always working when the service
department is open. I can get there when the sales people
are still there, but it doesn't appear to me that if they
know anything at all about similar problems, that they are
going to let on that they do. I can get a loaner for a
day, while they take it in. I'm going to do that.
I've been lurking in this group for years, and I am
surprised there is so little going on here these days, and
no postings about my year at all that I can find.
No I'm not trolling and it does do what I said! When it first did it I
posted here and was told it was a bad sending unit. Since it works fine
after I use about a quarter tank I have been living with. If they put an
access panel in the bed to get to the fuel pump I would spend the money to
fix it, if it starts to give false readings when it's low on fuel I will
change it. I had a landscape contractor here last fall with a dump body
conversion on his Silverado, I was standing next to his truck when he dumped
a load of mulch and I could have changed his fuel pump faster then he spread
the mulch. It might be worth doing a dump body conversion before I have to
drop the tank to change mine.
I only drop the tank on a pick-up if the bed cannot be removed (service
truck or heavy toolboxes). It is MUCH easier to pull the bed than drop
the tank if you need to service the pump or sender. 4-6 bolts, spare
tire, wiring harness and it's off.
I may try that, but not before I'm forced into action. Until then I'll spend
my time diving and ignore the gauge and "Low Fuel" warning when I know the
tank is full. My bigger problem is I have no power steering when I turn the
wheel to the left at low speed,it works fine when turning to the right.
If you are getting 20.5 mpg with city driving, evidentally your odometer is
malfunctioning too. I love Chevy's and like the 5.3 but I'm afraid you won't
get that kind of mileage in city driving (unless of course you refer to
driving on an interstate from your home in the suburbs at 70mph to
work...which isn't "city driving" at all).
I may have an odometer problem, I don't know. Seems to me
it might be very inconsistent if so. I put on about 75
miles after posting this and a lot of less than a mile
stopping, turning engine off, restarting and doing that
again, shopping, in about a 1/3rd of that. My mileage went
to 10MPG. My fuel gauge went to full again after filling
up after this. So I'm confused about what could be
My S-10 said it was 10.5 miles one way to work. Silverado
says its 12.5. Both have the tires & wheels that
manufacturer put on them. It is city driving, but not
lights every block or so. I have a one 4 mile stretch in
which its possible NOT to hit a light, and 2 other
stretches of 2 miles in which this is also possible, though
not likely. Thats why I said "mostly" city driving. I
hadn't gone anywhere else when I measured this.
I went on another trip up the Gorge yesterday, and I
believe now have filled 3 times since the thing would not
go all the way to full. Each time since that time, it has.
I got 20.5 on the Gorge trip, almost all highway, but
also half a dozen stops and engine starts through little burgs.
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