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Discussion Starter · #1 ·
Hey guys i'm looking at trading my 2003 lb7 in on a 2009 llm with 12k miles. I was wanting to know what kind of mileage you guys are getting without pulling. If people have completely stock trucks post what your getting and if its tuned with exhaust, intake, etc post your setup and what your getting. Thanks in advance guys.
 

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My Dad has an '08 LMM.. completely stock and he drives it easy.. He gets 15-17 mpg not towing. Thats mostly 2-lane hwy miles.

Oh, it has 15,000 ish miles on it
 

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Im getting between 12.5-15 in town and 16-19 highway. Mine has 35,000 miles on it and completely stock.
 

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im getting around 21 in the summer, winter usually drops because of treated fuel and such
 

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I'm getting 12-14 city and 16-18 (55-65mph) highway if i pussy foot it and 12-14 with a heavy foot (70-80mph), but i'm also running 35" on a lift . she has 50,000 mile on her. Mpgs are getting better now that shes breaking in:gearjamin
 

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15-16 city and got 18.3hwy on a 4 hr trip with cruise set at 85mph! robs tuning
 

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I get 13-14 on a good day.....With all the tuning and exhaust, No lift and 2wd.
But it is a dually and it weighs close to 12k empty... Towing my 10k trailer it goes down to about 11.5
 

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12-14 mpg calculated per tank since I bought it, not much better on the highway, havent drove it any farther than an hour staight on the interstate.. the way it likes the fuel dont think it will be much better no upgrades..
 

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Discussion Starter · #10 ·
thanks a lot guys for all the fast responce, the one i'm looking at is a 2009 all stock with 12k miles so i just wanted to get a general idea. if anybody with exhaust and and tunes want to chime in that would help too! thanks again guys!
 

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I just filled mine up with 6114 stock mostly city miles on mine and my dic says I have used 400 gallons and I figured that up at 15.3 mpg
 

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I get 15 to 16 combination,highway and city, bone stock with only 1800 miles on it. Hope it gets better, but doesn't look to good.
 

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I am getting 12-14 mpg with 6" lift on 33", and I just rolled 169,000
 

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Hey guys i'm looking at trading my 2003 lb7 in on a 2009 llm with 12k miles. I was wanting to know what kind of mileage you guys are getting without pulling. If people have completely stock trucks post what your getting and if its tuned with exhaust, intake, etc post your setup and what your getting. Thanks in advance guys.
Just wondering but why are you deciding to trade your LB7 for a LMM? I traded my '01 for a LMM and i like my LMM alot but i miss my goodies on my LB7 but I just went on a road trip that was 25 to 2600 miles and i was getting about 21-23 mpg and that was a lil bit of stop and go and a couple passes at the drag strip and the weather was about on average 70 degrees.
 

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Discussion Starter · #15 ·
I am getting 12-14 mpg with 6" lift on 33", and I just rolled 169,000
169k dang you must do some serious driving

Just wondering but why are you deciding to trade your LB7 for a LMM? I traded my '01 for a LMM and i like my LMM alot but i miss my goodies on my LB7 but I just went on a road trip that was 25 to 2600 miles and i was getting about 21-23 mpg and that was a lil bit of stop and go and a couple passes at the drag strip and the weather was about on average 70 degrees.
just looking over my options and looking for something a bit newer, thanks for the input everyone.
 

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Check this thread out. Should be all you need to see :)

http://www.duramaxforum.com/forum/07-5-lmm-duramax-powertrain/31826-great-lmm-debate.html

My truck with 285's, one of our EFI tunes and Exhaust gets about 20 on the highway, 17-18 on the interstate, and about 15 in town. Haven't done much for heavy towing, but light towing ~5000lbs I get around 13-14

I haven't gotten to run it with summer blend fuel yet, so mileage should hopefully go up once it starts warming up.
 

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Hey guys i'm looking at trading my 2003 lb7 in on a 2009 llm with 12k miles. I was wanting to know what kind of mileage you guys are getting without pulling. If people have completely stock trucks post what your getting and if its tuned with exhaust, intake, etc post your setup and what your getting. Thanks in advance guys.
15 city 18-20 highway. Completely stock. 30K miles.
 

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2007.5 with 24,000 miles.......15-16 city 18-19 highway. 11 or so towing a 10,000 lb toy hauler. Totally stock......
 
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