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Old 02-20-2014, 12:40 PM   #11
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hockeytownmom's Avatar
Join Date: Feb 2011
Location: South Lyon, MI
Posts: 1,096
Originally Posted by jevanb View Post
sounds like you need a bigger tank, when I had a burb it had a 42 gal tank and I could make it to atlanta on 1 tank from flint but that was without a trailer attached
It's definitely not a 42 gallon tank, I think it's 28. Dh says we get about 10mpg.

Kristina & Family
2015 Sunseeker 3170ds
'13 Honda Pilot -Kar Kaddy 3

Nights camped in 2011/36, 2012/9, 2013/24, 2014/27; 2015/50 2016: 29
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Old 02-20-2014, 03:47 PM   #12
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Join Date: Feb 2013
Location: Ottawa ON
Posts: 111
My trailer is about 5100 lbs lightly loaded and with no water (sticker says 4400lbs 'dry'). So its similar to yours when loaded, including battery, hitch, and propane.

My 09 Suburban 1500 is the 5.3l 6 speed 3.43 4x4 and is rated at 7400 lbs with the extra transmission oil cooler (5400 lbs without). My previous 05 Suburban was 5.3l 4 speed 4x4 and 3.43 which is like yours I expect. Same tow rating. The 07 refresh added 6 speed and improved the brakes and steering and more.

On a nice road I get 12mpg (Canadian, which would be 9 or 10 mpg US). Wind load is the big issue with the trailer height. Hills will push your RPM over 3500 to get the torque, and that will drain the gas quickly. I was below 8 mpg CDN in hilly or windy areas (and never passed anything ...).

Use tow-haul mode and watch the gas mileage computer to see where you can optimize the speed/gears. Inflate your tires to 45 psi at least (mine were 30 psi I think). I have P tires and will definitely get LT tires when I replace them. P tires are too squishy (due to sidewalls) for towing.

I have had 5 people in the Suburban (all gear in TT) and not noticed much difference in towing from having just 2 of us. At over 11,000 lbs GCVW, 400 lbs of kids doesn't add a lot. Just be sure to weigh the rear axle at a scale when loaded (check the rest too). That's where you will hit the weight limit on a 1500.

Overall you should be OK, but get a good WDH/sway control hitch and don't try driving at 65 mph.



2009 Suburban LT 1500 - 4x4 - 3.42
2009 Flagstaff 23FBS Super Lite
Nights Camped in 2015 - 21
Nights Camped in 2014 - 29
Nights Camped in 2013 - 31
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