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  1. #1

    Default How to tell what gears you have?

    This is dumb, and I should know this but I can't remember what gear ratio I have on my truck. I can't find the sticker which says it, but ive seen 2 possible gears in the manual, and I've looked online and it shows a different gear ratio so.. I guess what I'm asking is -- Is there anywhere on the truck I can look to find out what gears I have. It's completely stock so. The three gears i've seen are 3:42, 3:73, and 4:10. Online it says SLT models have 4:10 gears? But i sort of doubt that? It sounds like I should have 3:42 or 3:73.

    Oh and the truck is the one in the picture, 2005 GMC Sierra 1500 SLT Z71 Ext Cab

    Anyone who can help, let me know. Thanks!

    2005 GMC Sierra SLT 1500 4x4
    - 20% Tint
    - Line-Ex
    - 6" Fabtech Lift
    - 35" Nitto Trail Grapplers
    - 20" XD Badlands
    - SuperChips Flaspaq
    - Cat-Back Exhaust, Short Flo Mufflers
    - Chrome Mirrors
    - RECON Smoked Cab Lights
    - K&N Filter

    2003 Pontiac Grand Am GT1
    - 20% Tint

  2. #2
    Master Mechanic zubbiez's Avatar
    Join Date
    Feb 2009
    Eagle Mountain Utah


    go to this link itll tellyou where you can find the rpos ad which gears you have.
    2000 Silverado Z71 Whipple Supercharger, JBA Headers,3" cat back Flowmaster Exhaust, Volant cai, Pioneer Preimer deck,Orion subwoofer,03 signal light mirrors,03 taililghts

  3. #3


    ahhh thanks zubbiez. I got the code off of the list in my glove box and it turns out I've got 3.42 gears. Thanks for the help again!

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