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Hey guys where would I go about getting a tune? I have 33s and would like my transmission to shift correctly and speedo to read accurately, can I go to my local chevy dealership and have them recalibrate my ecu? Thanks for the help im in northern California about 35 min from sacramento if anyone knows of anyone.

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I don't think GM is going to help you with that.

You'll have to find the shop guys with HP Tuners, or some of the guys here. I forget the names. One is Limeswap and the other is the one who remote tunes (via internet).
 

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Hey guys where would I go about getting a tune? I have 33s and would like my transmission to shift correctly and speedo to read accurately, can I go to my local chevy dealership and have them recalibrate my ecu? Thanks for the help im in northern California about 35 min from sacramento if anyone knows of anyone.

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The Dealer can flash and update the pcm, but to tune it you need to contact Gerry at AVT, emaxxer, or limeswap. I think those are the only guys that offer it.
 

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what unforgiven said. I just had James update mine and I have the same set up as you. its about a couple of weeks. but I had x-mas and new years in that mix as well. it depends on what you want to get out of the tune.
 

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Can confirm that James's exchange service can be completely taken care of in a week if you use the same shipping as he does (2 day priority). Its like $5 in the package he ships you. I live in SD for reference.
 
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