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  1. #1
    Jr. Apprentice
    Join Date
    Nov 2010
    Location
    McConnells, South Carolina
    Posts
    26

    Default Gear Ratio RPO code? HELP!

    just bought myself an 05 Sierra 1500 z71 95k. Still smells new btw.
    I hooked up my programmer out of my old 2500 and went to set the tire size/ gear ratoio and it started my gear ratio out at 4.11 and If I remember correctly it started out on my 2500 at 3.73. So I'm wondering if in fact it does have 4.11s. I know you'd have to of special ordered one or by the grace of god had a dealer smart enough to order it with 4.11's.

    So, Which RPO code tells me my gear ratio?

  2. #2

    Default

    Gu5=3.23 gu6=3.42 gt4=3.73 gt5=4.10
    :cool:

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.
    :glasses:

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