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<p><font size="+1"><tt>This should do it! Maybe a little over kill
but.... :)<br>
</tt></font></p>
<p><font size="+1"><tt><a class="moz-txt-link-freetext" href="http://www.trucktrend.com/how-to/engine/1213tr-vortec-5-3l-big-bang/">http://www.trucktrend.com/how-to/engine/1213tr-vortec-5-3l-big-bang/</a></tt></font></p>
<p><font size="+1"><tt>Mark</tt></font></p>
<p><font size="+1"><tt>Nashville</tt></font><br>
</p>
<br>
<div class="moz-cite-prefix">On 4/2/2017 6:53 PM, Dave Cavanaugh
wrote:<br>
</div>
<blockquote
cite="mid:fa05b0a2-c781-102c-bf07-581ccc33c22c@frontier.com"
type="cite">I have a 2004 GMC Sierra half ton, 2WD extended (not
crew) cab. I believe it has a 5.3 Vortec engine, automatic
transmission, unsure of the axle ratio. I'm the original owner,
and it has about 74,000 miles on it. Other than the tires and
radio, it is completely stock and is in generally very good
shape. It fits my needs, and has been totally reliable to date,
and I plan to keep it for the foreseeable future. It also has a
Leer fiberglass canopy on it right now, but it'll probably come
off when I finish my move later this year. It's not my daily
driver; I typically use it to pick up lumber, construction
supplies and other routine truck duties. I typically don't do
much towing, and I have never been unhappy with the performance
until last year when I started making multiple trips from
Washington to Utah, usually towing an 8 to 12 foot UHaul trailer
with my shop stuff in it. This trip includes several mountain
passes and quite a bit of elevation change. The truck performs
OK, but not great.
<br>
<br>
I don't have a boat or RV, and I'm not trying to turn it into a
one ton hauler; I would just like some suggestions as to possible
mods I could have done to the engine to improve the performance
and, if possible, improve the gas mileage. It generally gets
about 16 MPG on these trips. Any ideas?
<br>
</blockquote>
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