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Thread: Speedo correction on 2005 Trailblazer

  1. #1
    Potential Tuner
    Join Date
    Dec 2010
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    3

    Speedo correction on 2005 Trailblazer

    Changed gears in a 2005 Trailblazer and not sure on how to correct the speedo. It has stock tires and changed to a 4:10 gear. It doesnt have have the normal gear/tire section. Any help?

  2. #2
    Tuner in Training
    Join Date
    Aug 2010
    Posts
    25
    Quote Originally Posted by Blacksheep408 View Post
    Changed gears in a 2005 Trailblazer and not sure on how to correct the speedo. It has stock tires and changed to a 4:10 gear. It doesnt have have the normal gear/tire section. Any help?
    On the speedo tab there is: "VSS Pulses Per Mile", "VSS Trans Rev Per Mile", and "Trans Rev per Mile". Try adjusting those by the same ratio that you changed your gears.