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Old 07-21-2009, 08:06 AM   #11
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i vote for the diesel too. i have one and love it. and as for the 6speed 1/2 ton, no it is not an allison. as a gm tech that has full training in transmissions, it is a good transmission and we have not seen any issues with it. but is no allision. if you are going to do any amount of hauling, it is very hard to beat the duramax/ allision combination.
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Old 07-21-2009, 08:20 AM   #12
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The 3.42 rear is design for fuel efficiency not so much for towing and for the live of me I have never seen a tow package on a truck equipped with a 3.42 rear as standard equipment. The 3.73 rear is the smallest rated tow rear but as stated above the 4.10 is better. Now that the US Government owns 60% of General Motors (GM) I believe it is now called (Government Motors)
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Old 07-23-2009, 12:44 AM   #13
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Quote:
Originally Posted by Wisconsin Camper View Post
Has anyone noticed a difference with a 3.73 rear axle versus the 3.42?

Our Yukon seems to do ok with the 3.42, but thought one with the 3.73 would be better.

If the 3.73 isn't going to make a difference, than the 3/4 ton Yukon might be the right choice.

Any thoughts?

Thanks

I used to tow with a 2004 Silverado with the 5.3L and the 3.42 rear end. Crap. Very weak. But the gas mileage was awesome!

Now with teh Z71 half ton, 5.3L and 3.73 rear end... pulls great and still doesn't break the bank to drive around. (or off the lot).
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Old 07-23-2009, 12:45 AM   #14
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Quote:
Originally Posted by rockwood06 View Post
The 3.42 rear is design for fuel efficiency not so much for towing and for the live of me I have never seen a tow package on a truck equipped with a 3.42 rear as standard equipment. The 3.73 rear is the smallest rated tow rear but as stated above the 4.10 is better. Now that the US Government owns 60% of General Motors (GM) I believe it is now called (Government Motors)
my 2004 Silverado came from teh factory with the 3.42 and the heavy duty towing package. total pull wt was 6,700#. And it was anemic!

See previous post...
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2008 FR Surveyor 291
Champion Genset
Slpybear, Mrs Slpybear, Three Cubs
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Old 07-23-2009, 05:06 AM   #15
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Originally Posted by spybeartx View Post
my 2004 Silverado came from the factory with the 3.42 and the heavy duty towing package. total pull wt was 6,700#. And it was anemic!

See previous post...

This is the first time I have heard of that, the info I got is that if a tow package was ordered on a truck then the 3.73 rear was part of the package and a 4.10 was optional. Thanks for the info.
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