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Chevy Silverado and GMC Sierra Real World MPG Numbers

116 messages,  Last post on Aug 23, 2009 at 6:14 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Fuel Efficiency (MPG), Truck


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#57 of 116
07 Gas silverado 2500 by rman6
May 06, 2007 (5:43 pm)
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#58 of 116
07 Gas silverado 2500 by rman6
Apr 06, 2007 (8:08 am)
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I am looking at new 4x4 3/4 ton pickups. I've always been a ford man, but the features and price on the new silverados are more appealing than the new fords. My big question is what kind of mileage to expect with the 6.0 in a 3/4 ton 4x4. I don't need a diesel (don't tow much, just need extra payload). Everyone I know have fords, so I need some input.
#59 of 116
Re: 07 Gas silverado 2500 [rman6] by geo9
Apr 06, 2007 (9:04 pm)
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Replying to: rman6 (Apr 06, 2007 8:08 am)

R.........You can expect poor mileage.
 
I am currently on the hunt for a 07 GMT-900 2500 x-cab
to replace my 04 6.0 2500 x-cab, auto 4:10s.
 
I can get 12-14 city......17 highway.............
 
I note the new body style 2500s offer 3:73 rear gears so
possibly can expect 1 or 2 mpgs more.
 
Nice trucks but thirsty !!!! Since I need a 2500 for
snowplowing and heavy towing I have no other choice.
IMO a diesel for $7000 MORE and the possible few more
mpgs is not worth it............
#60 of 116
Re: 07 Gas silverado 2500 [rman6] by coontie57
Apr 09, 2007 (5:27 am)
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Replying to: rman6 (Apr 06, 2007 8:08 am)

I had a 99 Ford diesel and my buddy had a 02 Chevy with the 6L engine. We pulled identical campers from GA/NC to Homer Alaska and home. I drove 14,400 miles and he a bit less. Going through the Yukon where the gas stations are limited we had to fill up at the same one --side beside. It was quite impressive how many more liters of gas he burned on the identical miles driven. Gas station to gas station etc. Incidentally GAS was more expensive in Canada than diesel.
 
I understand that the 6L has gotten better.. hope so for your sake.
 
On my Durmax diesel and Ford 7.3 diesel I get/got about 20 mpg with no load.
#61 of 116
Re: 07 Gas silverado 2500 [geo9] by geo9
Apr 09, 2007 (7:27 am)
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Replying to: geo9 (Apr 06, 2007 9:04 pm)

So as you can see your gonna get a couple of mpgs more
with a diesel than a 6.0 gasser..................
 
But its gonna take a LOOOOONG time to make up that $7000
difference on a every day commuter ride..........
#62 of 116
Re: 07 Gas silverado 2500 [geo9] by coontie57
Apr 09, 2007 (11:19 am)
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Replying to: geo9 (Apr 09, 2007 7:27 am)

The diesel engine will go a long way before overhaul. If you plan on keeping one forever like me its worth thinking about. And you also have to think if you are actually pulling something or just driving and commuting. After the tornadoes in Central Florida this Feb a group from Hearts with Hands cane down delivering supplies and they drove 3 Ford 250's. All three were donated and had between 310 and 333 K on them... each.. nothing ever done to the engines.. Stick Shifts..
 
I am not sure a 6L gas engine would go that far without engine work.. The diesels will probably go another 100K or better..
 
The diesel is messy to fillup ,, it smells if you get it on your hands etc.
 
Its just a personal decision.. the power and fuel efficiency is impressive with my new Chebby (as a friend calls it).
#63 of 116
57 by geo9
Apr 10, 2007 (11:02 am)
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Perhaps you should take a trip over to the truck
forums here. Diesels have many expensive issues.
Many owners call the Ford diesels "powerjokes" and
post on and on about injector issues among other things.
Not to mention the major expense of maintaining them.
 
Also note the new Ford 6.0 diesel and torqueshift trans.
issues posted around the net. Or the recent articles
of Ford withholding millions from their diesel supplier
over warranty issues...............
 
Yea I suppose you could get 300k miles from one. But at
what cost? Employ a inhouse mechanic by chance?
Heck the toyoyo owners brag that they get 300k (sic)
miles. Without ANY repairs of course ! LOL!!!!!!!!!
 
For the average buyer a diesel is a poor choice........
 
Now I could start on GMs diesels past and present.
But why bother..You get my point.................
#64 of 116
Re: 07 Gas silverado 2500 [coontie57] by 00chevy1500
Apr 15, 2007 (6:38 pm)
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Replying to: coontie57 (Apr 09, 2007 5:27 am)

The reason why your friend in the chevy had to fill up more often is because chevys have smaller fuel tanks than Fords
#65 of 116
Duramax '08 and gas milage by jerryterry22
Apr 18, 2007 (10:56 pm)
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I read on a blog that the '08 Duramax Diesel would get 25% more gas mileage. Anyone have information on this?
#66 of 116
Re: 07 Gas silverado 2500 [00chevy1500] by coontie57
Apr 19, 2007 (5:02 am)
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Replying to: 00chevy1500 (Apr 15, 2007 6:38 pm)

Yes I know that. Ford 250 Diesel = 29 gallons... Chevy 2500 Duramax = 26 gallons.
 
The other had a 6 L gas engine in his Chevy and his mpg was less than the diesel AND his tank was smaller so I let him lead the procession from one gas station to another. He quit and got more fuel sometimes when I didn't. When we BOTH went from one station to another his consumption was much greater ie, he bought more fuel / liters or gallons depending on where we were. We traveled together for about 3.5 months.

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