More on the 2011 IFS and other changes.. - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 54 (permalink) Old 12-22-2010, 06:38 AM Thread Starter
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More on the 2011 IFS and other changes..

There seems to be quite a bit of confusion I've found by many members as to just how different the 2011 is from the 2010 and prior model HD's.. There's a lot of stuff, too much to cut n' paste into a thread

For more, just click HERE . Like I said, there are a lot of technical differences, but two major changes that stick out:

The new IFS:

Quote:

2. New and strong independent front suspension
A completely redesigned independent front suspension system offers up to a 25-percent greater front axle weight rating – up to 6,000 pounds (2,721 kg) front gross axle weight rating (FGAWR) – enabling a snow plow to be used on all 4WD cab configurations with the available snow plow prep package, while also supporting improved ride and handling characteristics.

Silverado’s signature short-long arm/torsion bar front suspension design is retained, but now features new, forged steel upper control arms that are stronger and lighter than their predecessors. The new lower control arms are made of precision-machined cast iron to handle the greater loads. Five different torsion bar rates support five different front gross axle weight ratings (a single torsion bar was previously used for all models). This helps stabilize the range of trim heights of various models under load, while enhancing appearance, handling, durability, tire wear and alignment. The trim height is adjusted on each bar via a single bolt, easily allowing the height to be changed to account for the weight of a snow plow or other accessories.

The Silverado HD front suspension now uses a pair of urethane jounce bumpers on each side, instead of one, for improved load management; and there’s a new upper shock mount attachment design that’s positively connected to the frame with two fasteners. This design eliminates squeaks and clunks, while supporting higher load capability and increased durability.

Compared to competitors’ beam-axle front suspension, the Silverado’s independent front suspension provides a better ride, more accurate trim height control (with fewer parts) and greater flexibility to adjust the alignment for weight and tire sensitivity.
the new frame:

Quote:
1. New frames
In the quest to comprehensively redesign the Silverado HD chassis to improve durability and ride, while also supporting increased capability, engineers developed 11 all-new, fully boxed frame assemblies. The frames have increased cross sections and use more high-strength steel for greater durability, higher towing capacity and improved ride and handling; the front sections are hydroformed.

The bending and beaming stiffness of the frames is increased 92 percent and 20 percent, respectively, with the fully boxed sections enhancing torsional stiffness by a factor of five. Also, larger engine and transmission mounts, coupled with a 125-percent-stiffer front frame structure, provide greater vibration control, while hydraulic body mounts are incorporated under the cab section on extended and crew cab models for a more isolated feel inside.

Engineers addressed common customer and aftermarket uses when designing the new frames, including adding access holes to the rear frame section to enable easier installation of fifth-wheel/gooseneck-style hitches. Also, the frame-mounted hitch for conventional trailering is stronger, with a box-tube design. It supports up to 16,000 pounds (7,257 kg).

2011 Duramax 2500HD LTZ
100% US Made of mostly US parts with some parts from Germany and Japan.

Video of my truck: Youtube Video

2005 E320 CDI
2008 BMW X5 4.8i
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post #2 of 54 (permalink) Old 12-22-2010, 07:55 AM
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I need to upgrade

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post #3 of 54 (permalink) Old 12-23-2010, 03:05 AM
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yeah, the new truck is definately making me re-think keeping my '07 and buying another '06-'07.
The scary thing is I LOVE my '07. I really can't see how it get much better! lol
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post #4 of 54 (permalink) Old 12-24-2010, 05:15 AM Thread Starter
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HERE are some pictures of an LML with full snowplow package... looks great, and the report is that it runs great too.

2011 Duramax 2500HD LTZ
100% US Made of mostly US parts with some parts from Germany and Japan.

Video of my truck: Youtube Video

2005 E320 CDI
2008 BMW X5 4.8i
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post #5 of 54 (permalink) Old 12-24-2010, 06:54 AM
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cant see pics need to be a member

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post #6 of 54 (permalink) Old 12-24-2010, 06:58 AM Thread Starter
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ok, here's two of em... the two best ones.
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2011 Duramax 2500HD LTZ
100% US Made of mostly US parts with some parts from Germany and Japan.

Video of my truck: Youtube Video

2005 E320 CDI
2008 BMW X5 4.8i
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post #7 of 54 (permalink) Old 12-26-2010, 05:26 AM Thread Starter
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in keeping this thread updated with info on the 2011 2500/3500 differences.. here's a good video I came across on youtube.


2011 Duramax 2500HD LTZ
100% US Made of mostly US parts with some parts from Germany and Japan.

Video of my truck: Youtube Video

2005 E320 CDI
2008 BMW X5 4.8i
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post #8 of 54 (permalink) Old 12-26-2010, 02:43 PM
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Very cool. My current thinking of owning my truck and another used one is starting to fade in favor of buying a new one......
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post #9 of 54 (permalink) Old 12-26-2010, 02:52 PM
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I have been anxious to look a new one over, but to date I have not been able to find any on the lots I come across.

-Wayne
2007 Chevy LBZ 6.6L Classic

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post #10 of 54 (permalink) Old 12-26-2010, 03:51 PM Thread Starter
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Quote:
Originally Posted by fordt View Post
I have been anxious to look a new one over, but to date I have not been able to find any on the lots I come across.
you know, their definitely keeping inventories tight on the diesels ... Especially top of the line 4x4/LTZ types.. I had to look between 4 dealers to find a total of 4 trucks available, of which only one met my needs/wants.... this is helping keeping prices up too. They really wouldn't deal too much on these..... gone are the days of $7-10K off sticker (factory).... 2.5K was the result of a 6 hour negotiation!

2011 Duramax 2500HD LTZ
100% US Made of mostly US parts with some parts from Germany and Japan.

Video of my truck: Youtube Video

2005 E320 CDI
2008 BMW X5 4.8i
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