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Old 11-27-2011, 11:14 AM   #1
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Exclamation gmc yukon 2004 5.3

I have 5.3 2004 Yukon how can I increase my mpg ram air or cold air diffrent maybe I should chip my Yukon or high performance something would better air flow help just thought I would ask the gas gods
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Old 11-27-2011, 01:30 PM   #2
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Re: gmc yukon 2004 5.3

Take a look at this thread, same exact vehicle:
http://www.gassavers.org/showthread.php?t=13712

For your specific questions, here's what I posted in that thread:
Expensive intake, exhaust, computer, and bolt-on upgrades do not work (unless you are driving like a jerk all the time). Some people (never the ones with good hard data) claim an improvement on these trucks, but the improvement is never enough to pay for itself.
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Old 11-27-2011, 01:40 PM   #3
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Exclamation Re: gmc yukon 2004 5.3

Could I chip my gmc yukon to get better mpg I was looking at super chips
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Old 11-27-2011, 02:08 PM   #4
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Re: gmc yukon 2004 5.3

I don't think an economy tune will pay for itself in a reasonable amount of miles. A more common power tune will reduce your fuel economy.
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Old 11-27-2011, 02:39 PM   #5
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Smile Re: gmc yukon 2004 5.3

What can I do than anything to help my Yukon gain even 5 mpg better
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Old 11-27-2011, 02:54 PM   #6
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Re: gmc yukon 2004 5.3

See this thread, it's exactly the same discussion about the same vehicle:
http://www.gassavers.org/showthread.php?t=13712

In short: Inflate your tires to maximum, go medium-speed through green lights instead of stopping at red lights, brake less, coast more. Also, if you're willing to go slower on the highway, every mph you slow down will help.

Which rear end gear ratio do you have? Look at the label in your glovebox for RPO codes beginning with G. GT4: 3.73. GT5: 4.10. GU6: 3.42.
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Old 11-27-2011, 03:25 PM   #7
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Re: gmc yukon 2004 5.3

Ok thank you for your help
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Old 11-27-2011, 04:51 PM   #8
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Re: gmc yukon 2004 5.3

A 5 MPG gain on a Yukon would equate to about a 40% increase in economy. No bolt-on device will get you that. As Holy Cow said, keep tires to the sidewall max pressure, drive the speed limit, combine trips, and avoid stop & go traffic.
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