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Old 07-07-2016, 08:26 AM   #1
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Chevy/GMC 2500 diesel owners

Considering upgrading my present 2007 diesel TV for something newer. One of the trucks I am looking at is a 2011 Chevy Silverado 2500 Z71 2wd. I have no experience in Chevy/GMC and wanted to get some opinions of those who own them.

1. What is the difference between a Chevy and GMC?
2. Love, It is ok, or hate your Chevy/GMC?
3. I am looking at 2010 - 2013 models. Any difference in those years? One year better than another? I would assume the later the better?
4. I am towing around a 34'/9,000 pound TT. For those towing around the same (TT or 5er); what type of MPG are you seeing?
5. Any other pertinent info you would like to pass on.

Thanks,
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Old 07-07-2016, 10:34 AM   #2
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I have a '14 GMC Sierra 2500 (same as 11-14) and towed my toy hauler (~12,000 lbs loaded) all around the midwest and even from WI to FL and the truck towed the trailer really well. I would get between 9.5 and 11 mpg, but that TH was 12.5 ft tall and I think that played into the mileage more than weight.

The Allison trans and the torque of the diesel through the mountains made that trip a breeze.

We have since bought an 5'er XLR TH and the mileage is the same with a heavier trailer.

Dave
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Old 07-07-2016, 10:41 AM   #3
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1. What is the difference between a Chevy and GMC?

Not much. Built on same line. GMC usually comes with a few more bells & whistles than Chevy (for a few thousand $ more, of course).

Same as Chrysler/Dodge (think Town & Country/Caravan) or Ford/Mercury (Fusion/Milan).

In Forest River Hybrid-speak, same as Roo/Shamrock.
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Old 07-07-2016, 10:45 AM   #4
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Quote:
Originally Posted by KRSmitty View Post
Considering upgrading my present 2007 diesel TV for something newer. One of the trucks I am looking at is a 2011 Chevy Silverado 2500 Z71 2wd. I have no experience in Chevy/GMC and wanted to get some opinions of those who own them.

1. What is the difference between a Chevy and GMC?
2. Love, It is ok, or hate your Chevy/GMC?
3. I am looking at 2010 - 2013 models. Any difference in those years? One year better than another? I would assume the later the better?
4. I am towing around a 34'/9,000 pound TT. For those towing around the same (TT or 5er); what type of MPG are you seeing?
5. Any other pertinent info you would like to pass on.

Thanks,
Mostly the grill and a few doo-dads. They are made at the same plant as each other (1500's in Mexico, HD's in Flint, MI).

I am a GMC/Chevy guy to the core. If a Chevy will do the job, that's what I get. But I know in today's world the differences in all 3 are slight.

I don't know about the years. Someone else might. I had a 2015 and now a 2016.

When I had a 2015 3/4 (2500) I got 22 mpg (diesel) on highway not pulling, and pulling a bumper pull I got about 13. On my current 3500 dually I get 10.5-12.0 (depends mostly on hills) pulling a fifth wheel.
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Old 07-07-2016, 11:01 AM   #5
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The 2011 D'Max has a bad history when it comes to the emissions. I just traded mine in and it spent more time in the shop than any other vehicle I ever owned. Not saying every 2011 is bad but I definitely had a rotten egg. Only reason I kept it as long as I did was it was all covered. But the warranty just timed out (5 years), so it had to go.
I would recommend the latter years you are looking at, as it seems that GM got the bugs worked out by the 13 model year.
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Old 07-07-2016, 11:01 AM   #6
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You are right in the time frame when DEF was added to Chevy Diesels. If having or not having a DEF equipped vehicle is important you need to check carefully.
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Old 07-07-2016, 11:15 AM   #7
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I traded in my Chevy for a GMC 2500 and the differences are noticeable, but nothing really major.

Same engines
same chassis
same tranny
front grille is different between them
the interior is slightly different, and the GMC has a few more features in the nav/head unit, but other then that, if you put them side by side with no badges, you'll only notice the front grille difference
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Old 07-07-2016, 11:43 AM   #8
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You are right in the time frame when DEF was added to Chevy Diesels. If having or not having a DEF equipped vehicle is important you need to check carefully.
I have heard from several users of DEF that it is not that big of deal. Have to fill up the DEF tank every so often...that is about it. Unless there is more to it?
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Old 07-07-2016, 11:55 AM   #9
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I have heard from several users of DEF that it is not that big of deal. Have to fill up the DEF tank every so often...that is about it. Unless there is more to it?
When GM made the transition to meet federal requirements (2010 I think) they had a lot of issues with the DEF, exhaust & emission systems/parts failing, etc. If you go to the Duramax forum you can see the issues folks had and how they started to disappear by 2013. Like I mentioned I had a bunch of issues but a coworker with a 2011 3500 only had problems with glow plugs. (another issue with those years...GM had a service bulletin that allowed dealers to change all 8 and after they did that on mine I never had an issue with the plugs again)
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Old 07-07-2016, 11:58 AM   #10
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But overall the DEF system is not that big of deal. Just a few bucks a gallon depending on where you get it. Some dealers even top it off during an oil change.
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