[AT] off topic, Internet takeover by govt ?(now GM 5300)

[charlie hill]

Follow up to my other reply.   First off, vehicles vary with each one
that rolls out the factory door.  They shouldn't but they do.  That is
why we have the term "lemon".  Also, my truck doesn't have the
variable displacement which I'm sure affects overall performance.
One more thing,  the computers in new vehicles reprogram until they
figure out how the driver drives them so, for example, a car driven
around town by a little old lady will perform differently than an
identical car driven by an 18 year old farm boy.   If the farm boy
drives the old ladies car for a while the computer will make the adjustments
to his driving style, or at least that's how it's supposed to work.
The old saying regarding new vehicles from back in my younger years seems to 
apply even more
now than back then "break them in like you want them to run".

Charlie

-----Original Message----- 
From: Phil Vorwerk
Sent: Friday, February 06, 2015 5:06 PM
To: 'Antique tractor email discussion group'
Subject: Re: [AT] off topic, Internet takeover by govt ?(now GM 5300)


I think that there is a major difference in weight when comparing the
Suburban (which is like a Yukon XL) and a Sierra.  I bought a 2004 Sierra
with the 5.3 new, and it felt like it had a ton of power and towed quite
well for a half ton. I bought a new Yukon (the short model) in 2007 with a
5.3 and I was very disappointed in the power and fuel economy. 07 was the
first year they offered the 5.3 with variable displacement, where it would
go to 4 cylinders at the right speed/load combination. It was set up so
poorly that I don't think it improved the fuel economy at all at 60 mph - it
was always in the wrong part of the power band and would kick out of the
economy mode very quickly. I experimented a little bit and found that if I
put it tow mode so it would stay out of the highest gear ratio I could
slightly improve my indicated mpg according the instant mpg-gauge/liar. I
could tell when it went into 4 cylinder mode because the engine took on an
extra low pitched rumble. (My hearing is still pretty good....)

Phil in Sunny Southern Minnesota



-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Ron Cook
Sent: Friday, February 06, 2015 3:08 PM
To: Antique tractor email discussion group
Subject: Re: [AT] off topic, Internet takeover by govt ?(now GM 5300)

Charlie,
     I have several friends that swear by their 5300 engines and talk
much like you are.  However all of them are newer than the '04 flex fuel
engine like I have.   That flex fuel business probably has it de-tuned
?  Fuel mileage is around 17 max, whereas my 1997 5.7 Tahoe stays right
at 18 all the time.  The Tahoe probably is a little lighter but wouldn't
be much.  One of my nephews that has driven the Suburban probably more
than I says to put E85 in it if you want to see poor fuel mileage.  I
might someday just for giggles.
     I took that Suburban for a couple reasons.  (1)  I always wanted
one but couldn't afford it.  I inherited zero from my dad while he left
everything to one 1/2 brother that stayed on the farm and never had a
job other than being a yes man.  He is now a multi millionaire.  So I
had no problems taking it.  (2)  I figured at my age, 71, that a nice
vehicle like that would see me to the end of my driving days.  I have
never been so disappointed in a vehicle.  It is pretty, though.  I am
sure it will be moving along to a new owner one of these days.  I can
see where supporting it could get very expensive.
Ron Cook
Salix, IA
On 2/6/2015 2:02 PM, charlie hill wrote:
> Ron,  I've been tickled pink with the 5.3 in my Crew Cab 4WD Sierra.
> It's got a boat load of power, cruises the highway at 60 mph in OD
> with the tack showing about 1700 rpm and gets on average all around
> driving about 17 mpg.  On the highway at speeds below 75 it gets around
> 20 mpg.  I actually like it better than the 5.7's I've had.  I agree with
> you
> that torque makes power and there is no substitution for cubic inches but
> I'm fine with my 5.3.   I know a guy that has a 2011 GMC crew cab 4wd
> that he special ordered with the 6.2 gas engine.  It's got a ton of power
> but he has plenty of money and doesn't drive that far so gas mileage is
> of no concern to him.
>
> Charlie
>

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