I just installed the gears from a 3.42 to a 4.10 and all i can say is what a difference. Now my question is my speedo is off so much i am driving 55 and only doing 40 lol So i am guessing it is going to be time here in a month to get me a tune or can i take the battery off and give it 30 min to reprogram. If not i will be looking up the info on nelson and giving him a call and taking a trip to as some would say disneyworld.....lol
Work in progress.........
Your gonna have to make that trip to "Nelsonworld" The computer wont relearn the gears by resetting it, you have to reprogram it. You'll be much happier when you get the tune also!
Chris
2009 Silverado, HPTuners, all stock.
Like chrisj6 said...
You'll need to get Allen to get change your gear size & match tire size in the Speedo table with what you have on the truck. Takes a matter of minutes to read PCM, change that option, then write it back to the PCM.
May as well get the full road tune while you're there.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
Just go up to Allen and WE promise,you will ge glad you did man.
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