Still Searchin'
Bend, Oregon
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Joined: 02/18/2003
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Anybody pulling with a 6L engine w/ 3.73 or 4.10 diff??
What kind of mileage do you get towing and solo with what kind of towed weight (actual if you know it)??
I currently get about 10mpg with the lighter TT below with a 5.3L, but thinking of a heavier TT of about 6500-7000# and the larger engine.
As always, your feedback is appreciated!
2004 Yukon XL K1500 w/ 5.3L & 3.73 diff.
1989 22ft. Wilderness TT @ 5500# loaded
Member: TTN, Escapees, Good Sam
Just retired, will travel!
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ecrone
Southeast, Mass
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Joined: 01/28/2008
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I have the 6.2L w 3.73 Yukon XL Denali. We tow a 2500 pound popup and get about 11 mpg or so. But, that's with a family of 6 in the truck. We're getting a new Rockwood TT that weighs 6000 lbs dry. Not looking forward to that MPG. But, the tow mode works fabulously.
2008 Rockwood 8317 SS
2007 GMC Yukon Denali
In Remission from Non-Hodgkins Lymphoma since Sept/06
Me(37), DW(?), DS(10), DD(9), DS(6), DS(5)
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longrider1100
Canal Winchester, OH
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Joined: 03/13/2004
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We are pulling about 8000 lbs with a 2002 GMC 2500HD 2wd 6.0 litre 4:10 axle.
13mpg solo and 8 mpg towing.
I hear the new ones do better with the Alli tranny.
Good Luck!
"NO MERCY...NO QUARTER".....ARRGGH!
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Lucas874
Kingston, NH
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Joined: 08/15/2006
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My 2002 Silverado 2500hd 6.0 gets about 12mpg regular driving and about 8 towing my Jayco 29bhs.
2007 Jayco Jayflight 29BHS
2002 Chevy Silverado 2500HD
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1mtnman
Colorado
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Joined: 01/18/2004
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longrider1100 wrote:We are pulling about 8000 lbs with a 2002 GMC 2500HD 2wd 6.0 litre 4:10 axle.
13mpg solo and 8 mpg towing.
I hear the new ones do better with the Alli tranny.
Good Luck!
Don't know about the Alli transmission, they do have a 6 speed but don't think the 6.0 will drive the Alli.
MTNMAN
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6MISFITZ
Fort Erie, ON, CANADA
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Joined: 04/15/2003
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I know you said Suburban but we are close in curb weight (6100# with 4.10 axle) to a 2WD 'Burb/Yukon XL and we got just over 9MPG average on an 1800 mile round trip to Missouri.
Around 12-14 MPG when not towing anything and in good weather.
Mike.
Mom, Dad, 4 kids, 2 Camping Dogs
Express 2500 LS (135"WB) 6.0L, 4.10, G80, PYO wheels, HENSLEY & McKesh
Prowler Regal 320DBHS w/QUAD BUNKS
MISFITZ RACING
MFCC Member
Rallies Attended 4, 7 Un-Rallies
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SugarHillCTD
Sugar Hill, NH, USA
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Joined: 11/29/2003
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1mtnman wrote:longrider1100 wrote:We are pulling about 8000 lbs with a 2002 GMC 2500HD 2wd 6.0 litre 4:10 axle.
13mpg solo and 8 mpg towing.
I hear the new ones do better with the Alli tranny.
Good Luck!
Don't know about the Alli transmission, they do have a 6 speed but don't think the 6.0 will drive the Alli.
The 6.0 gas does not have an Allison trans. Only the Duramax and the discontinued 8.1L gas had the Allison. The new 6.0L gas gets a 6 speed auto, but it is a "hydramatic" (or whatever they are designated)
The Allison, even as a 5 speed, is a great trans. Had a 2002 GMC 2500 crew cab 4x4 with the 8.1L/Ally. Nice piece of machinery.
BTW, both that truck and a previous 2002 GMC 2002 xcab 4x4 6.0L gas would get 13 to almost 14 mpg highway unloaded (keeping the speed under 70 and going EASY on getting up to speed)
John
2006 Dodge Ram 2500 QC/LB 4x4 Cummins/6 speed- GONE
2006 Northstar 850SC- GONE too
1993 BMW K1100RS a.k.a. Hades, the new "RV"
2007 Kaw 250R
Best friend/DW on the passenger seat
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Camper-Man
Fredericksburg VA
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Joined: 02/20/2006
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I have a 6.0L with 4.10 axle in a "Chopped 'Burban" (2007 Avalanche). 13 mpg on the highway, 11 mpg around town, 8 mpg towing a 6,000 lb Outback trailer.
'06 Outback 26RS
'07 Avalanche 6.0L 4.10
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Still Searchin'
Bend, Oregon
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Joined: 02/18/2003
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Thanks guys. Sounds like I could get 8-9mpg pulling 6500#. I averaged 11.3mpg on a 17k mile trip with my existing 5.3L and 5500# TT (total average, solo & pulling), and suspect that will drop 1mpg with a 6L 3.73 TV pulling a 6500# TT.
Sound about right?
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jnesta
SE PA
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Joined: 03/13/2007
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I know you said 6.0, but just as an FYI, I get 8-9.5 towing 7,000 lbs. with the 8.1 and 3.73 suburban. Not saying the 8.1 is absolutely necessary here, but it is nice to have.
'02 Suburban 2500 4x4 8.1 3.73 (Sold!)
'01 Sunline 280 SR (Sold!)
New "RV": 91 vw Vanagon MV Weekender!
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