HELP 4.10 ? - 3.73 ? - 3.42 ?

[nauteal]

HELP!

 

I have an 2002 4x4 Yukon equiped with the bi-fuel V8 and a 3.73 drivetrain. With the current incentives going on I am considering trading for a NEW '05. I have found one I like of the few left in my area, but there is one item that is bothering me. I like everything about the vehicle except I don't feel I need the 4.10 axles it has got on it. The dealer has told me I will not notice any difference from my current vehicle . . . but we all know they want to sell this vehicle. I rarely tow anything. When I do get out on the highway I don't want to make the gas milage really any worse than what I have now. Plus I am concerned about a higher amount of drivline noise.

 

Can I get some feedback as to how this 4.10 will perform verses my 3.73 on the highway.

 

Should I hold-out to find a vehicle with a 3.42?

 

HELP!

[budissy78]

I have an 05 GMC Sierra 2500HD with the 6.0 in it with 4.10 gears. This is a work truck but I was very disapointed when I took it on a long highway trip and only got 15 MPG. This trip was a set the cruise and go trip with very little elevation change. With everyday driving I get between 12-13 MPG. In my opinion I would definitely go with the 3.42 or the 3.73 for the millage issue any little bit helps now.

[Trouttrooper]

I've had both axles.

 

You will notice a difference on the highway, 4.10 will not get the same mileage. If you do a lot of town driving then I'd say don't worry about it. You won't hear any driveline noise from a 4.10.

[R Dogg 56]

With the gearing my truck has, I regularly see between 14 and 16.5 mpg's. I don't "romp" on it, and I have no "go fast" parts on it yet. Plus I don't tow anything.

[PewterC3]

if you had ever thought you might go with a larger wheel and tire then you have been running....you'd want the 4.10's.

[mikez]

I have the 4.10 gear in my 2005 GMC Sierra cc z71. I'm very happy with it all around. You will not get as good of gas mileage on the highway as a 3.42 but you wont notice much difference from the 3.71. I had a 3.73 in my 2003 ext cab z71 and always felt like it needed more gear ie: 4.10. If I reset the gas mileage while on the highway and highway only I have seen it around 19-20 mpg. I average 15-16 mpg. The 4.10 does a really good job of getting my truck going without feeling sluggish. If the truck didn't have torque management it would roast the tires on demand. Hope this helps.

[Tucson_02Silverado]

3.42 - 25/75 city/highway driving, probably will never tow, maybe once in a while from the Home store.

 

3.73 - 60/40 city/highway driving, occasional 5000lb tow on freeways, decent comprise ratio

 

4.10 - seem to be always towing something, or loading the bed up, lift with 33/35, go quick city driving

[nauteal]

3.42 - 25/75 city/highway driving, probably will never tow, maybe once in a while from the Home store.

 

3.73 - 60/40 city/highway driving, occasional 5000lb tow on freeways, decent comprise ratio

 

4.10 - seem to be always towing something, or loading the bed up, lift with 33/35, go quick city driving

 

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Thanks for all the feedback. We went back with the 3.73. We came real close to a 3.42, but we got a more attractive deal on the 3.73. Thanks again!