Gear Ratios?

Discussion in 'General Tahoe/Yukon/Escalade Discussion Forum' started by X5GEE, Jun 1, 2008.

  1. X5GEE

    X5GEE New Member

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    I'm looking into buying a used 07' Tahoe (4wd) soon. The only thing I'll be towing is a small trailer for my ATV. And that's once a month. What final gear ratio should I get or look into? A 4.10? Does it differ in the LS, Z71, LT or LTZ? I just want the best overall gas mileage. Any help is greatly appreciated. Thanks
     
  2. 08 Yukon

    08 Yukon Full Access Member

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    You'll get better mileage with the 3.42, which I believe is the standard supplied rear. You wouldn't want the 4.10 unless you towed some heavy trailers, or were in the mountains all the time. My Oldsmobile Car has a 3.07.
     
  3. Gambler

    Gambler Full Access Member

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    I think the 3.42 is standard on 2wd and the 3.73 is standard on the 4wd. Just pulling a small trailer will be fine with any of the gear ratios.
     
  4. Rollin Thunder

    Rollin Thunder Full Access Member

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    i would get 3.73's i had 4.10's on my 06 and it gave me plenty of towing and passing power, but when i wasnt towing i got 14 mpg city 15 mpg highway average.

    the new one with 3.73's has IMO more power and still tows amazingly, and with out towing i average (according to DIC) 16 city and 19-20 highway.:thumbsup:


    so look at it this way 3.42's may work but would be lagging, 4.10 would definatly work, but not pratical otherwise, so 3.73 is your best bet. :thumbsup:
     
  5. X5GEE

    X5GEE New Member

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    Thanks guys ... another quick question; Is the Hybrid meant for towing? I was looking at one today and notice the gear ratio was 3.08.
     
  6. Rollin Thunder

    Rollin Thunder Full Access Member

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    Well its got a 6.0 but they tried to save weight where ever they could so cooling for the engine and tranny are not really built for towing (may over heat)

    I would not really reccommendit for heavy duty towing
     
    Last edited: Jun 2, 2008
  7. Gambler

    Gambler Full Access Member

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    You can tow something light, no problem.
     
  8. strangeengine

    strangeengine Full Access Member

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    It's got a 6000 lb towing capacity. Sounds like you'll be fine.

    I would not hesitate.
     
  9. Black Dog

    Black Dog Full Access Member

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    Yeah 4.10s I think were only for 4wd but I'm not sure. Also I think LS models were only available with the higher gears (lower numbers). Could be wrong on this. Anyway, I think you'd have a pretty hard time even locating one with 4.10s, new OR used. 3.73s should be fine for most needs.
     
  10. if2218

    if2218 New Member

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    Don't mean to hijack the thread here but where are the gear codes located?
    I know I'm a noob here and I am aware of the codes for each ratio. Tried looking for it but couldn't come up with anything.

    Thanks in advnce!
     
  11. Black Dog

    Black Dog Full Access Member

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    You didn't jack it, you brought it back from the dead. The list of RPO codes is in the glove box, on the left, laying flat when the box is open.
     
  12. if2218

    if2218 New Member

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    That's a big 10-4!

    Thanks again!
     
  13. jgenb1

    jgenb1 New Member

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    I bought 2008 Chevy Tahoe hybrid to export my country because of no tax for hybrid car. I want it to my my hunting truck and put 5 inch Rough country lift kit, Iron Bull steel bumper, Rockstar wheel, Nitto trial grappler. Want to add G80. Does it work and how affact to MPG?
     
  14. Ont240

    Ont240 Full Access Member

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    glove box
     
  15. coachmendave

    coachmendave New Member

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    I have a '13 LTZ Tahoe 4x4 5.3l and 6 speed with 342 gear. Mileage is NOT good and terribly slow starting on a hill. Pulling the camper in tow mode rpms stay around 2500 and up. I wish the engine has some torque and less 4000 rpms!
     
  16. coachmendave

    coachmendave New Member

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    Update on the 342. Out of warranty and is now destroying my transmission. The dealership won’t work on it because it had a miserable 342. 65,000 mile price of gmc junk!!!