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WHY WHY WHY for 05

pastor scott.com

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pastor scott.com Enthusiast

pastor scott.com

Posted
Posted

Its the roll over king here.

 

Shoping for new BURB and Im upset about some changes.

no more 3:73 gears now its 3:42 Why ?

and how do I get the Optional 4:10 also whats up with the electric fan, is that better or worse. But 3:42 thats gotta be a dog, the 3:73 in my 04 were bad enough.

 

 

 

Scott

Cool Zr2 Enthusiast

Cool Zr2

Posted
Posted

you want an electric fan, they are better than a mechanical in many aspects.

 

And 3.42's are just fine, I'm sure they put in a different torque converter to accomidate the acceleration.

AG Bill 05 Z71 Enthusiast

AG Bill 05 Z71

Posted
Posted

The factory went to 3.42s to allow them to increase their rated mileage on the window sticker from 18 MPG to 19 MPG on their pickups. For an unloaded pickup, this ratio works OK. However, I don't like the trans downshifting for every little hill and it always seems to be lugging. I chose the 4.10s and they are fine. There is probably 1-2 MPG less than the 3.42s, but I like how the vehicle drives. The 4.10s are an option, so you need to find a dealer who has one or trade another dealer for one.

 

The electric fans are nothing but a positive feature. First they only operate when needed. The water pump mounted fan (even with a fluid clutch) is always turning, making noise, which takes HP and decreases mileage. The water pump should last longer because it does not have that heavy fan on the end of it's shaft, wearing out the bearing.

redvett Senior Enthusiast

redvett

Posted
Posted

Its the roll over king here.

 

Shoping for new BURB and Im upset about some changes.

no more 3:73 gears now its 3:42 Why ?

and how do I get the Optional 4:10 also whats up with the electric fan, is that better or worse. But 3:42 thats gotta be a dog, the 3:73 in my 04 were bad enough.

 

It for Federal fuel requirments. The 05,s have the electric fans and 3:42 axles along with more Torque & HP. With gas prices this might be the best buy unless your towing a heavy trailer all the time. :rolleyes:

WyRam Enthusiast

WyRam

Posted
Posted

My 05 CrewCab 4x4 with 4.10s will do 18.2 to 18.5 at 68mph and 17.2 to 17.5 at 72 mph.I wouldn't buy a pickup or SUV with 3.42s.Nothing wrong with the electric fans at all.

MAGNUM Enthusiast

MAGNUM

Posted
Posted

I just purchased an 2005 yukon xl with the 3.42 rear end and in my opinion it was a big mistake, I liked my 2000 with the 4.10s much better. electric fan is ok.

bigjames4xl Enthusiast

bigjames4xl

Posted
Posted
I just purchased an 2005 yukon xl with the 3.42 rear end and in my opinion it was a big mistake, I liked my 2000 with the 4.10s much better. electric fan is ok.

 

 

 

 

 

I hate to disagree here but with todays fuel prices 4.10s are a big mistake unless you do a lot of towing. And even if you do a lot of towing get the more powerful engines and still get 3.42 gears.

 

If you can get 18mpg with 4.10s think what you could get with 3.42s!!!

 

If you have deep pockets or you don't feel like you're being robbed everytime you buy a tank of fuel then carry on.

 

Been there done that!!! My GMC now has a 3.08 in it , up from a 3.42!!! :rolleyes:

 

 

I also think the milage from 3.42 down to a 4.10 will give you a difference of more than 1 or 2 mpg. My hot rod big block El Camino dropped almost 4mpg when I went from a 2.73 gear to a 3.31 gear. With an overdrive it got 19 on the highway but dropped to 14-15 when I went to the 3.31. Our full size fuel injected trucks will lose milage too.

RyanZ71 Senior Enthusiast

RyanZ71

Posted
Posted
you want an electric fan, they are better than a mechanical in many aspects.

 

And 3.42's are just fine, I'm sure they put in a different torque converter to accomidate the acceleration.

 

 

 

 

 

Grrr I don't know what gear ratio I have on my 99 Z71 but I HATE the fact that the thing can't hold 75 MPH going up a not so steep hill and has to shift down to hold the speed, really TICKS ME OFF!

lrymal Senior Enthusiast

lrymal

Posted
Posted
....Grrr I don't know what gear ratio I have on my 99 Z71 but I HATE the fact that the thing can't hold 75 MPH going up a not so steep hill and has to shift down to hold the speed, really TICKS ME OFF!

 

 

 

What I don't understand is why it has go through a full-scat acceleration, as if in a race, while using the cruise control mode----different subject. I have always griped about the cruise control going into full scat when it downshifts, as opposed to a soft downshift when you are using your foot. Anyway..........

 

Yeah, I have a 15 mile stretch of road in which every vehicle I have had using an automatic transmission would go through an intense exercise of gear hunting. Didn't matter if it were a car or truck. On this same route, I just routinely drop the selector out of overdrive (D) into 3rd and there is no hunting. Gas mileage doesn't take a significant hit and the truck seems happy.

 

I honestly can't remember the specifics well, but as a kid, on this same stretch, I don't recall any of my dad's cars / trucks downshifting (1960s era) like today's vehicles do. I really wonder if the automatics back then had "D" as today's 3rd? In other words, they had 1, 2, and D. Or even, LO, HIGH, and DRIVE. No overdrive (today's "D").

 

And finally, one of my first pickups ages ago was a 4.3 L V-6 with a standard. Man, talk about having to STIR the gear shift on that same 15 mile road. Never could find a gear that fit. Downshift - upshift - downshift - upshift....

WyRam Enthusiast

WyRam

Posted
Posted
I just purchased an 2005 yukon xl with the 3.42 rear end and in my opinion it was a big mistake, I liked my 2000 with the 4.10s much better. electric fan is ok.

 

 

 

 

 

I hate to disagree here but with todays fuel prices 4.10s are a big mistake unless you do a lot of towing. And even if you do a lot of towing get the more powerful engines and still get 3.42 gears.

 

If you can get 18mpg with 4.10s think what you could get with 3.42s!!!

 

If you have deep pockets or you don't feel like you're being robbed everytime you buy a tank of fuel then carry on.

 

Been there done that!!! My GMC now has a 3.08 in it , up from a 3.42!!! :rolleyes:

 

 

I also think the milage from 3.42 down to a 4.10 will give you a difference of more than 1 or 2 mpg. My hot rod big block El Camino dropped almost 4mpg when I went from a 2.73 gear to a 3.31 gear. With an overdrive it got 19 on the highway but dropped to 14-15 when I went to the 3.31. Our full size fuel injected trucks will lose milage too.

 

 

 

 

I tow about a 1/2 dozen times a month and we live in a Basin with Mountains all around.If I had 3.42 I mights well have a Taurus Station Wagon!

redvett Senior Enthusiast

redvett

Posted
Posted

I tow about a 1/2 dozen times a month and we live in a Basin with Mountains all around.If I had 3.42 I mights well have a Taurus Station Wagon!

 

Towing that often and living in a Basin you surely dont want 3:42's that is for sure. Everyone here has different driving situations and you have to decide on whats best for you. If you live in a fairly level part of the country and dont tow much the 3:42 would be fine. If i lived in your part of the country i probably would have 4:11's. :thumbs:

bigjames4xl Enthusiast

bigjames4xl

Posted
Posted

Under the circumstances of being in the mountains I can see the need for the gear. That wasn't clear to me in earlier post. Didn't notice the address.

 

Out here 4.10s are just not needed except for serious towing. :thumbs:

99-2door Senior Enthusiast

99-2door

Posted
Posted
I honestly can't remember the specifics well, but as a kid, on this same stretch, I don't recall any of my dad's cars / trucks downshifting (1960s era) like today's vehicles do. I really wonder if the automatics back then had "D" as today's 3rd? In other words, they had 1, 2, and D.  Or even, LO, HIGH, and DRIVE.  No overdrive (today's "D").

 

 

 

 

 

 

Of course...... they didn't have overdrive. Wasn't common until the late 80s.

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