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Gas mileage Chevy/GMC trucks


Old 03-13-2004, 06:19 AM
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Join Date: Aug 2002
Location: Apache Jct. AZ
My Boat: 24' Pantera
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I had a 2000 4X4 ext cab dually,8.1 with 4:10 - about 6-8 mpg. But I was loaded down with tools and ladders. Even removed the back seat for more space for storage. The back seat in those trucks is useless anyway. But it did tow excellently - didn't even know there was anything back there. I chose the gas engine for conveineince, and figured I could fill up anywhere. Good thing with that low gas mileage and long hauls.

Great truck, but lots of gas and to fill up took 15 minutes PITA!!
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Old 03-13-2004, 06:34 AM
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Originally posted by ChrisK
I have an 02' chevy 2500HD with the 8.1 and allison trans... I get about 11 MPG city and about 13 MPG highway not towing anything... less of course with a load... not all that great to say the least...
friend has the 03 same package , says he get's around 12 mpg
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Old 03-13-2004, 09:30 AM
Join Date: Oct 2000
Location: Sussex, WI
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2001 2500HD crew cab, 10-11mpg not towing
7-8 towing 12000 lbs

8.1 liter with 4.10 gears

Power of the 8.1 compared to the 6.0 is night and day, plus you get the allison tranny.

I usually pull the boat at 70 to 75 mph, if you slow down to 65 mileage might be a little better.

Just for comparison purposes, towing back from the ozarks I have a friend with a dodge cummins pulling the same size boat, when we filled up and compared the mileage he was getting 11 and I was getting 8.
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Old 03-13-2004, 11:10 AM
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Join Date: Mar 2001
Location: Chesterfield, Va.
My Boat: 95' 32' Sunsation, 500hps
Posts: 782

I tow with a 90' chevy 3500 dually, 7.4 tbi wit a turbo trans. Mileage towing 9-10. I have towed with my B-I-L
99' 2500 Burb, 7.4 Votrec. Mileage towing with that was 13-14. Both towed well. Used the Burb to pick my boat up, about 830 miles each way. Did the trip in 13.5 hrs out and 14 hrs return. No, I wasn't pumped!!!!!!!!
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Old 03-13-2004, 11:27 AM
Join Date: Jan 2004
Location: Newark DE
My Boat: 1986 Avanti 22
Posts: 10

this is my 02 2500hd with the 6 liter...... i might get 10mpg.......with 2 bucks a gallon now.....i cringe every time i stop at the gas pump wich is quite a bit...but the truck other wise is great!....looks better than a phurd and beats them all in a drag race......coming from experience
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Old 03-13-2004, 03:05 PM
Join Date: Nov 2000
Location: PA USA
My Boat: Fast Boats , Fast Cars
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I have a 2500 Suburban with 6.0 and 3.73 gears. It get's 11mpg city 12.5 highway, not towing
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Old 03-13-2004, 04:59 PM
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Location: WV
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I have a 2000 3500 8.1 allison, 11 mpg non towing 8-9 with boat. Love the truck lots of power and rides great.
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Old 03-13-2004, 05:08 PM
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Join Date: Dec 2000
Location: Lake St. Clair
My Boat: 95 Formula 336, HP500's
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2500 Avalanche with 4.10 and I get 11.4 mixed highway and city. With my previous Av, it had the 3.73 and I got 14.1 on the highway.
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