GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 5 of 5
  1. #1

    Default What gear ratio should I have?

    I have an 07 Silverado Crew Cab. Does anybody know what gear ratio I should have and what gear ratio is stock? My truck is a little slow when taking off and I have a programmer,exhaust,and intake. im thinking I might have the wrong gear ratio. I bought the truck lifted at the dealer. Thanks in advance
    07 SILVERADO Ls
    K&N Intake
    Hypertech Max Energy
    6" PRO COMP LIFT
    PRO COMP 17" RIMS 33" goodyear shoes
    Pioneer Avic D3 nav/DVD
    Chrome running boards
    Chrome door handles
    Dual tv/dvd in headrest
    Flowmaster
    HID's (8000k)
    Rear view camera

  2. #2
    Moderator
    dwill3015's Avatar
    Join Date
    Jan 2007
    Location
    Yacolt, Washington
    Posts
    4,338
    Blog Entries
    2

    Default

    Check the sticker in your glovebox for one of there codes. Yours is probably the more common GT4 (3.73 ratio)

    Gho axle rear,3.54 ratio
    gk9 axle rear,4.63 ratio
    gl3 axle rear,6.17 ratio
    gm1 axle rear,2.59 ratio
    gm3 axle rear,3.45 ratio
    gm8 axle rear,2.56 ratio
    gn9 axle rear,4.11 ratio
    gq1 axle,std ratio
    gty axle,wide track
    gt4 axle rear,3.73 ratio
    gt5 axle rear,4.10 ratio
    gt7 axle rear,3.33 ratio
    gt8 axle rear,4.10 ratio
    gu2 axle rear,2.73 ratio
    gu4 axle rear,3.08 ratio
    gu5 axle rear,3.23 ratio
    gu6 axle rear,3.42 ratio
    gv2 axle rear,5.83 ratio
    Last edited by dwill3015; 03-17-2009 at 06:38 PM.
    Darcy
    Washington State
    2006 Silverado 2500HD LT3 4X4 CC SB Duramax LBZ
    Tuff Country 6" lift, 35" Toyo M/T's on 20" Ultra Peacemaker wheels, Quadzilla Stealth2 programmer, Diamond Eye 5" cat-back exhaust, factory Special order color Yellow.

  3. #3

    Default

    Quote Originally Posted by dwill3015 View Post
    Check the sticker in your glovebox for one of there codes. Yours is probably the more common GT4 (3.73 ratio)

    Gho axle rear,3.54 ratio
    gk9 axle rear,4.63 ratio
    gl3 axle rear,6.17 ratio
    gm1 axle rear,2.59 ratio
    gm3 axle rear,3.45 ratio
    gm8 axle rear,2.56 ratio
    gn9 axle rear,4.11 ratio
    gq1 axle,std ratio
    gty axle,wide track
    gt4 axle rear,3.73 ratio
    gt5 axle rear,4.10 ratio
    gt7 axle rear,3.33 ratio
    gt8 axle rear,4.10 ratio
    gu2 axle rear,2.73 ratio
    gu4 axle rear,3.08 ratio
    gu5 axle rear,3.23 ratio
    gu6 axle rear,3.42 ratio
    gv2 axle rear,5.83 ratio
    cool thanks. What gear ratio should I have right now with 33" tires do you know?
    07 SILVERADO Ls
    K&N Intake
    Hypertech Max Energy
    6" PRO COMP LIFT
    PRO COMP 17" RIMS 33" goodyear shoes
    Pioneer Avic D3 nav/DVD
    Chrome running boards
    Chrome door handles
    Dual tv/dvd in headrest
    Flowmaster
    HID's (8000k)
    Rear view camera

  4. #4
    Moderator
    dwill3015's Avatar
    Join Date
    Jan 2007
    Location
    Yacolt, Washington
    Posts
    4,338
    Blog Entries
    2

    Default

    I think some of the major off-road sites like 4wheel parts has a chart that will tell you what would be optimum for your setup.
    Darcy
    Washington State
    2006 Silverado 2500HD LT3 4X4 CC SB Duramax LBZ
    Tuff Country 6" lift, 35" Toyo M/T's on 20" Ultra Peacemaker wheels, Quadzilla Stealth2 programmer, Diamond Eye 5" cat-back exhaust, factory Special order color Yellow.

  5. #5

    Default

    Cool Ill swing by then thanks for the help
    07 SILVERADO Ls
    K&N Intake
    Hypertech Max Energy
    6" PRO COMP LIFT
    PRO COMP 17" RIMS 33" goodyear shoes
    Pioneer Avic D3 nav/DVD
    Chrome running boards
    Chrome door handles
    Dual tv/dvd in headrest
    Flowmaster
    HID's (8000k)
    Rear view camera

Similar Threads

  1. Need help with choosing a gear ratio.
    By fx2offroad in forum Lifted & Offroad Suspension
    Replies: 2
    Last Post: 01-10-2010, 07:09 PM
  2. what gear ratio?
    By dustin_742 in forum General Chevy & GM Tech Questions
    Replies: 16
    Last Post: 12-09-2009, 06:24 AM
  3. rear gear ratio
    By nick in forum General Chevy & GM Tech Questions
    Replies: 7
    Last Post: 03-13-2009, 09:48 PM
  4. question about gear ratio
    By scgamer_99 in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 9
    Last Post: 03-08-2009, 02:10 PM
  5. Gear ratio
    By stringbender in forum General Chevy & GM Tech Questions
    Replies: 4
    Last Post: 02-08-2009, 05:49 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •